diff --git a/.vscode/settings.json b/.vscode/settings.json
index 95ddd16b..afe04861 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -32,6 +32,7 @@
     "./dist/workflow-step-template-schema.json": [
       "/*.step-template.yml",
       "/step-template.yml"
-    ]
+    ],
+    "http://json-schema.org/draft-07/schema": ["/src/schemata/**/*.yml"]
   }
 }
diff --git a/dist/index.d.ts b/dist/index.d.ts
index 8634019c..385d3fd1 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -3056,6 +3056,12 @@ export declare const schemas: {
                                     description: string;
                                     markdownDescription: string;
                                 };
+                                rows: {
+                                    type: string;
+                                    minimum: number;
+                                    description: string;
+                                    markdownDescription: string;
+                                };
                             };
                             markdownDescription: string;
                         };
@@ -3103,6 +3109,9 @@ export declare const schemas: {
                         };
                     };
                     oneOf?: undefined;
+                    if?: undefined;
+                    then?: undefined;
+                    not?: undefined;
                 } | {
                     oneOf: {
                         $ref: string;
@@ -3110,6 +3119,101 @@ export declare const schemas: {
                     type?: undefined;
                     required?: undefined;
                     properties?: undefined;
+                    if?: undefined;
+                    then?: undefined;
+                    not?: undefined;
+                } | {
+                    if: {
+                        properties: {
+                            type: {
+                                const: string;
+                            };
+                            "ui:options"?: undefined;
+                        };
+                        required?: undefined;
+                    };
+                    then: {
+                        properties: {
+                            "ui:widget": {
+                                enum: string[];
+                                const?: undefined;
+                            };
+                            type?: undefined;
+                        };
+                        required?: undefined;
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    not?: undefined;
+                } | {
+                    if: {
+                        required: string[];
+                        properties: {
+                            "ui:options": {
+                                required: string[];
+                            };
+                            type?: undefined;
+                        };
+                    };
+                    then: {
+                        required: string[];
+                        properties: {
+                            "ui:widget": {
+                                const: string;
+                                enum?: undefined;
+                            };
+                            type?: undefined;
+                        };
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    not?: undefined;
+                } | {
+                    if: {
+                        required: string[];
+                        properties: {
+                            "ui:options": {
+                                required: string[];
+                            };
+                            type?: undefined;
+                        };
+                    };
+                    then: {
+                        properties: {
+                            type: {
+                                const: string;
+                            };
+                            "ui:widget"?: undefined;
+                        };
+                        required?: undefined;
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    not?: undefined;
+                } | {
+                    not: {
+                        required: string[];
+                        properties: {
+                            hidden: {
+                                const: boolean;
+                            };
+                            prepare: {
+                                const: boolean;
+                            };
+                        };
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    if?: undefined;
+                    then?: undefined;
                 })[];
                 examples: ({
                     type: string;
@@ -6412,6 +6516,12 @@ export declare const schemas: {
                                     description: string;
                                     markdownDescription: string;
                                 };
+                                rows: {
+                                    type: string;
+                                    minimum: number;
+                                    description: string;
+                                    markdownDescription: string;
+                                };
                             };
                             markdownDescription: string;
                         };
@@ -6459,6 +6569,9 @@ export declare const schemas: {
                         };
                     };
                     oneOf?: undefined;
+                    if?: undefined;
+                    then?: undefined;
+                    not?: undefined;
                 } | {
                     oneOf: {
                         $ref: string;
@@ -6466,6 +6579,101 @@ export declare const schemas: {
                     type?: undefined;
                     required?: undefined;
                     properties?: undefined;
+                    if?: undefined;
+                    then?: undefined;
+                    not?: undefined;
+                } | {
+                    if: {
+                        properties: {
+                            type: {
+                                const: string;
+                            };
+                            "ui:options"?: undefined;
+                        };
+                        required?: undefined;
+                    };
+                    then: {
+                        properties: {
+                            "ui:widget": {
+                                enum: string[];
+                                const?: undefined;
+                            };
+                            type?: undefined;
+                        };
+                        required?: undefined;
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    not?: undefined;
+                } | {
+                    if: {
+                        required: string[];
+                        properties: {
+                            "ui:options": {
+                                required: string[];
+                            };
+                            type?: undefined;
+                        };
+                    };
+                    then: {
+                        required: string[];
+                        properties: {
+                            "ui:widget": {
+                                const: string;
+                                enum?: undefined;
+                            };
+                            type?: undefined;
+                        };
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    not?: undefined;
+                } | {
+                    if: {
+                        required: string[];
+                        properties: {
+                            "ui:options": {
+                                required: string[];
+                            };
+                            type?: undefined;
+                        };
+                    };
+                    then: {
+                        properties: {
+                            type: {
+                                const: string;
+                            };
+                            "ui:widget"?: undefined;
+                        };
+                        required?: undefined;
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    not?: undefined;
+                } | {
+                    not: {
+                        required: string[];
+                        properties: {
+                            hidden: {
+                                const: boolean;
+                            };
+                            prepare: {
+                                const: boolean;
+                            };
+                        };
+                    };
+                    type?: undefined;
+                    required?: undefined;
+                    properties?: undefined;
+                    oneOf?: undefined;
+                    if?: undefined;
+                    then?: undefined;
                 })[];
                 examples: ({
                     type: string;
diff --git a/dist/workflow-step-template-schema.json b/dist/workflow-step-template-schema.json
index 48ceb718..20bd31f7 100644
--- a/dist/workflow-step-template-schema.json
+++ b/dist/workflow-step-template-schema.json
@@ -3324,6 +3324,12 @@
                                     "default": true,
                                     "description": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n",
                                     "markdownDescription": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
+                                },
+                                "rows": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n",
+                                    "markdownDescription": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
                                 }
                             },
                             "markdownDescription": "Display configuration options for certain field types and widget settings. If a field or widget does not support `ui:options`, the setting is ignored.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
@@ -3393,6 +3399,105 @@
                             "$ref": "#/definitions/field-schema/timer"
                         }
                     ]
+                },
+                {
+                    "if": {
+                        "properties": {
+                            "type": {
+                                "const": "string"
+                            }
+                        }
+                    },
+                    "then": {
+                        "properties": {
+                            "ui:widget": {
+                                "enum": [
+                                    "text",
+                                    "textarea"
+                                ]
+                            }
+                        }
+                    }
+                },
+                {
+                    "if": {
+                        "properties": {
+                            "type": {
+                                "const": "boolean"
+                            }
+                        }
+                    },
+                    "then": {
+                        "properties": {
+                            "ui:widget": {
+                                "enum": [
+                                    "checkbox",
+                                    "switch"
+                                ]
+                            }
+                        }
+                    }
+                },
+                {
+                    "if": {
+                        "required": [
+                            "ui:options"
+                        ],
+                        "properties": {
+                            "ui:options": {
+                                "required": [
+                                    "rows"
+                                ]
+                            }
+                        }
+                    },
+                    "then": {
+                        "required": [
+                            "ui:widget"
+                        ],
+                        "properties": {
+                            "ui:widget": {
+                                "const": "textarea"
+                            }
+                        }
+                    }
+                },
+                {
+                    "if": {
+                        "required": [
+                            "ui:options"
+                        ],
+                        "properties": {
+                            "ui:options": {
+                                "required": [
+                                    "label"
+                                ]
+                            }
+                        }
+                    },
+                    "then": {
+                        "properties": {
+                            "type": {
+                                "const": "boolean"
+                            }
+                        }
+                    }
+                },
+                {
+                    "not": {
+                        "required": [
+                            "prepare",
+                            "hidden"
+                        ],
+                        "properties": {
+                            "hidden": {
+                                "const": true
+                            },
+                            "prepare": {
+                                "const": true
+                            }
+                        }
+                    }
                 }
             ],
             "examples": [
diff --git a/dist/workflow-template-schema.json b/dist/workflow-template-schema.json
index 89e7020e..7d1b4297 100644
--- a/dist/workflow-template-schema.json
+++ b/dist/workflow-template-schema.json
@@ -3561,6 +3561,12 @@
                                     "default": true,
                                     "description": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n",
                                     "markdownDescription": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
+                                },
+                                "rows": {
+                                    "type": "number",
+                                    "minimum": 0,
+                                    "description": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n",
+                                    "markdownDescription": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
                                 }
                             },
                             "markdownDescription": "Display configuration options for certain field types and widget settings. If a field or widget does not support `ui:options`, the setting is ignored.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
@@ -3630,6 +3636,105 @@
                             "$ref": "#/definitions/field-schema/timer"
                         }
                     ]
+                },
+                {
+                    "if": {
+                        "properties": {
+                            "type": {
+                                "const": "string"
+                            }
+                        }
+                    },
+                    "then": {
+                        "properties": {
+                            "ui:widget": {
+                                "enum": [
+                                    "text",
+                                    "textarea"
+                                ]
+                            }
+                        }
+                    }
+                },
+                {
+                    "if": {
+                        "properties": {
+                            "type": {
+                                "const": "boolean"
+                            }
+                        }
+                    },
+                    "then": {
+                        "properties": {
+                            "ui:widget": {
+                                "enum": [
+                                    "checkbox",
+                                    "switch"
+                                ]
+                            }
+                        }
+                    }
+                },
+                {
+                    "if": {
+                        "required": [
+                            "ui:options"
+                        ],
+                        "properties": {
+                            "ui:options": {
+                                "required": [
+                                    "rows"
+                                ]
+                            }
+                        }
+                    },
+                    "then": {
+                        "required": [
+                            "ui:widget"
+                        ],
+                        "properties": {
+                            "ui:widget": {
+                                "const": "textarea"
+                            }
+                        }
+                    }
+                },
+                {
+                    "if": {
+                        "required": [
+                            "ui:options"
+                        ],
+                        "properties": {
+                            "ui:options": {
+                                "required": [
+                                    "label"
+                                ]
+                            }
+                        }
+                    },
+                    "then": {
+                        "properties": {
+                            "type": {
+                                "const": "boolean"
+                            }
+                        }
+                    }
+                },
+                {
+                    "not": {
+                        "required": [
+                            "prepare",
+                            "hidden"
+                        ],
+                        "properties": {
+                            "hidden": {
+                                "const": true
+                            },
+                            "prepare": {
+                                "const": true
+                            }
+                        }
+                    }
                 }
             ],
             "examples": [
diff --git a/src/schemata/definitions/field.yml b/src/schemata/definitions/field.yml
index 154d685c..b71b105b 100755
--- a/src/schemata/definitions/field.yml
+++ b/src/schemata/definitions/field.yml
@@ -22,6 +22,11 @@ allOf:
             default: true
             description: |
               A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.
+          rows:
+            type: number
+            minimum: 0
+            description: |
+              The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.
       readOnly:
         type: boolean
         default: false
@@ -67,6 +72,53 @@ allOf:
       - $ref: '#/definitions/field-schema/relationship'
       - $ref: '#/definitions/field-schema/script'
       - $ref: '#/definitions/field-schema/timer'
+  # only allow text & textarea widgets for string fields
+  - if:
+      properties:
+        type:
+          const: string
+    then:
+      properties:
+        ui:widget:
+          enum: ['text', 'textarea']
+  # only allow checkbox & switch widgets for boolean fields
+  - if:
+      properties:
+        type:
+          const: boolean
+    then:
+      properties:
+        ui:widget:
+          enum: ['checkbox', 'switch']
+  # only allow `ui:options.rows` for textarea widgets
+  - if:
+      required: ['ui:options']
+      properties:
+        ui:options:
+          required: ['rows']
+    then:
+      required: [ui:widget]
+      properties:
+        ui:widget:
+          const: 'textarea'
+  # only allow `ui:options.label` for boolean fields
+  - if:
+      required: ['ui:options']
+      properties:
+        ui:options:
+          required: ['label']
+    then:
+      properties:
+        type:
+          const: boolean
+  # do not allow setting both `prepare` and `hidden` to `true`
+  - not:
+      required: [ 'prepare', 'hidden']
+      properties:
+        hidden:
+          const: true
+        prepare:
+          const: true
 examples:
   # enum options
   - type: string
diff --git a/src/workflow-step-template-schema.json b/src/workflow-step-template-schema.json
index 0bea1413..5e04ed01 100644
--- a/src/workflow-step-template-schema.json
+++ b/src/workflow-step-template-schema.json
@@ -3324,6 +3324,12 @@
                   "default": true,
                   "description": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n",
                   "markdownDescription": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
+                },
+                "rows": {
+                  "type": "number",
+                  "minimum": 0,
+                  "description": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n",
+                  "markdownDescription": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
                 }
               },
               "markdownDescription": "Display configuration options for certain field types and widget settings. If a field or widget does not support `ui:options`, the setting is ignored.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
@@ -3393,6 +3399,105 @@
               "$ref": "#/definitions/field-schema/timer"
             }
           ]
+        },
+        {
+          "if": {
+            "properties": {
+              "type": {
+                "const": "string"
+              }
+            }
+          },
+          "then": {
+            "properties": {
+              "ui:widget": {
+                "enum": [
+                  "text",
+                  "textarea"
+                ]
+              }
+            }
+          }
+        },
+        {
+          "if": {
+            "properties": {
+              "type": {
+                "const": "boolean"
+              }
+            }
+          },
+          "then": {
+            "properties": {
+              "ui:widget": {
+                "enum": [
+                  "checkbox",
+                  "switch"
+                ]
+              }
+            }
+          }
+        },
+        {
+          "if": {
+            "required": [
+              "ui:options"
+            ],
+            "properties": {
+              "ui:options": {
+                "required": [
+                  "rows"
+                ]
+              }
+            }
+          },
+          "then": {
+            "required": [
+              "ui:widget"
+            ],
+            "properties": {
+              "ui:widget": {
+                "const": "textarea"
+              }
+            }
+          }
+        },
+        {
+          "if": {
+            "required": [
+              "ui:options"
+            ],
+            "properties": {
+              "ui:options": {
+                "required": [
+                  "label"
+                ]
+              }
+            }
+          },
+          "then": {
+            "properties": {
+              "type": {
+                "const": "boolean"
+              }
+            }
+          }
+        },
+        {
+          "not": {
+            "required": [
+              "prepare",
+              "hidden"
+            ],
+            "properties": {
+              "hidden": {
+                "const": true
+              },
+              "prepare": {
+                "const": true
+              }
+            }
+          }
         }
       ],
       "examples": [
diff --git a/src/workflow-template-schema.json b/src/workflow-template-schema.json
index bf124eaa..c9f5d52f 100644
--- a/src/workflow-template-schema.json
+++ b/src/workflow-template-schema.json
@@ -3561,6 +3561,12 @@
                   "default": true,
                   "description": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n",
                   "markdownDescription": "A flag indicating whether a field of type `boolean` has a display label. Setting this to `false` will display either only a checkbox or switch control element, without any visible label.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
+                },
+                "rows": {
+                  "type": "number",
+                  "minimum": 0,
+                  "description": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n",
+                  "markdownDescription": "The number of rows to display when a field of type `string` is configured to display a textarea element via the `ui:widget` setting.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
                 }
               },
               "markdownDescription": "Display configuration options for certain field types and widget settings. If a field or widget does not support `ui:options`, the setting is ignored.\n\n\nSee more: [Field Schema](https://schema.laboperator.com/schemas/definitions/field) "
@@ -3630,6 +3636,105 @@
               "$ref": "#/definitions/field-schema/timer"
             }
           ]
+        },
+        {
+          "if": {
+            "properties": {
+              "type": {
+                "const": "string"
+              }
+            }
+          },
+          "then": {
+            "properties": {
+              "ui:widget": {
+                "enum": [
+                  "text",
+                  "textarea"
+                ]
+              }
+            }
+          }
+        },
+        {
+          "if": {
+            "properties": {
+              "type": {
+                "const": "boolean"
+              }
+            }
+          },
+          "then": {
+            "properties": {
+              "ui:widget": {
+                "enum": [
+                  "checkbox",
+                  "switch"
+                ]
+              }
+            }
+          }
+        },
+        {
+          "if": {
+            "required": [
+              "ui:options"
+            ],
+            "properties": {
+              "ui:options": {
+                "required": [
+                  "rows"
+                ]
+              }
+            }
+          },
+          "then": {
+            "required": [
+              "ui:widget"
+            ],
+            "properties": {
+              "ui:widget": {
+                "const": "textarea"
+              }
+            }
+          }
+        },
+        {
+          "if": {
+            "required": [
+              "ui:options"
+            ],
+            "properties": {
+              "ui:options": {
+                "required": [
+                  "label"
+                ]
+              }
+            }
+          },
+          "then": {
+            "properties": {
+              "type": {
+                "const": "boolean"
+              }
+            }
+          }
+        },
+        {
+          "not": {
+            "required": [
+              "prepare",
+              "hidden"
+            ],
+            "properties": {
+              "hidden": {
+                "const": true
+              },
+              "prepare": {
+                "const": true
+              }
+            }
+          }
         }
       ],
       "examples": [