Update the configure global header

Author: GitHub Actions

modules/customizing/proc-customizing-your-product-global-header.adoc

@@ -1,23 +1,42 @@
 [id="customizing-your-product-global-header_{context}"]
 = Customizing your {product} global header
 
-As an administrator, you can add a global header to your {product-custom-resource-type} instance. You can enable the global header by default.
-You can do the following:
-
-* Add a logo, search, notifications, users settings, help, and more.
-* Customize the order and position of icons and features by placing them on either the left or right side of the header.
+As an administrator, you can add a global header to create a consistent and flexible navigation bar across your {product-custom-resource-type} instance. By default, the global header includes a search field, create, support and notification buttons, and a user profile drop-down. You can customize the order and position of icons and features.
 
 .Prerequisites
 * You have configured your {product-custom-resource-type} instance.
-* You have administrative access and can modify a global header.
+* You have configured the support url in the `app-config.yaml` file.
+* You have installed the notification plugin.
 
 .Procedure
 
-* Set the enabled property to `true`. For example:
+* To disable the global header, disable the right plugin. For example:
 
-[source,yaml]
+[source,yaml,subs="+attributes,+quotes"]
+----
+# Disabling global header
+- package: ./dynamic-plugins/dist/red-hat-developer-hub-backstage-plugin-global-header
+  disabled: true
 ----
-globalHeader:
-  enabled: true
+
+.Procedure
+
+* To replace the {product} global header with a custom header of your choice, first disable the default header.
+
+* Install your own header as a dynamic plugin as shown in the following example:
+
+[source,yaml,subs="+attributes,+quotes"]
 ----
-* To disable this feature, update the configuration file by setting the property to `false`.
+# Custom header implementation
+- package: <npm or oci package-reference>
+  disabled: false
+  pluginConfig:
+    dynamicPlugins:
+      frontend:
+        <package_name>:
+          mountPoints:
+            - mountPoint: application/header
+              importName: <Header component name>
+              config:
+                position: above-main-content
+----