diff --git a/README.md b/README.md
index 6afbeea..5ec4f0c 100644
--- a/README.md
+++ b/README.md
@@ -47,10 +47,14 @@ module "opensearch" {
   }
 
   cluster_config = {
-    instance_count           = 3
+    multi_az_with_standby_enabled = false
+
     dedicated_master_enabled = true
+    dedicated_master_count   = 3
     dedicated_master_type    = "c6g.large.search"
-    instance_type            = "r6g.large.search"
+
+    instance_count = 3
+    instance_type  = "r6g.large.search"
 
     zone_awareness_config = {
       availability_zone_count = 3
@@ -124,6 +128,11 @@ module "opensearch" {
     }
   ]
 
+  # Off-peak window
+  off_peak_window_options = {
+    enabled = false
+  }
+
   tags = {
     Terraform   = "true"
     Environment = "dev"
@@ -208,11 +217,11 @@ No modules.
 | <a name="input_ebs_options"></a> [ebs\_options](#input\_ebs\_options) | Configuration block for EBS related options, may be required based on chosen [instance size](https://aws.amazon.com/elasticsearch-service/pricing/) | `any` | <pre>{<br/>  "ebs_enabled": true,<br/>  "volume_size": 64,<br/>  "volume_type": "gp3"<br/>}</pre> | no |
 | <a name="input_enable_access_policy"></a> [enable\_access\_policy](#input\_enable\_access\_policy) | Determines whether an access policy will be applied to the domain | `bool` | `true` | no |
 | <a name="input_encrypt_at_rest"></a> [encrypt\_at\_rest](#input\_encrypt\_at\_rest) | Configuration block for encrypting at rest | `any` | <pre>{<br/>  "enabled": true<br/>}</pre> | no |
-| <a name="input_engine_version"></a> [engine\_version](#input\_engine\_version) | Version of the OpenSearch engine to use | `string` | `null` | no |
+| <a name="input_engine_version"></a> [engine\_version](#input\_engine\_version) | Version of the OpenSearch engine to use. For example, `OpenSearch_2.11` or `Elasticsearch_7.9`. | `string` | `null` | no |
 | <a name="input_ip_address_type"></a> [ip\_address\_type](#input\_ip\_address\_type) | The IP address type for the endpoint. Valid values are ipv4 and dualstack | `string` | `null` | no |
 | <a name="input_log_publishing_options"></a> [log\_publishing\_options](#input\_log\_publishing\_options) | Configuration block for publishing slow and application logs to CloudWatch Logs. This block can be declared multiple times, for each log\_type, within the same resource | `any` | <pre>[<br/>  {<br/>    "log_type": "INDEX_SLOW_LOGS"<br/>  },<br/>  {<br/>    "log_type": "SEARCH_SLOW_LOGS"<br/>  }<br/>]</pre> | no |
 | <a name="input_node_to_node_encryption"></a> [node\_to\_node\_encryption](#input\_node\_to\_node\_encryption) | Configuration block for node-to-node encryption options | `any` | <pre>{<br/>  "enabled": true<br/>}</pre> | no |
-| <a name="input_off_peak_window_options"></a> [off\_peak\_window\_options](#input\_off\_peak\_window\_options) | Configuration to add Off Peak update options | `any` | <pre>{<br/>  "enabled": true,<br/>  "off_peak_window": {<br/>    "hours": 7<br/>  }<br/>}</pre> | no |
+| <a name="input_off_peak_window_options"></a> [off\_peak\_window\_options](#input\_off\_peak\_window\_options) | Configuration to add Off Peak update options. OpenSearch Service uses off-peak window to schedule service software updates and Auto-Tune optimizations that require a blue/green deployment during comparatively lower traffic times, whenever possible. Refer to the [AWS documentation](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/off-peak.html) for details. | `any` | <pre>{<br/>  "enabled": true,<br/>  "off_peak_window": {<br/>    "hours": 7<br/>  }<br/>}</pre> | no |
 | <a name="input_outbound_connections"></a> [outbound\_connections](#input\_outbound\_connections) | Map of AWS OpenSearch outbound connections to create | `any` | `{}` | no |
 | <a name="input_package_associations"></a> [package\_associations](#input\_package\_associations) | Map of package association IDs to associate with the domain | `map(string)` | `{}` | no |
 | <a name="input_saml_options"></a> [saml\_options](#input\_saml\_options) | SAML authentication options for an AWS OpenSearch Domain | `any` | `{}` | no |
diff --git a/examples/complete/main.tf b/examples/complete/main.tf
index 1cef719..42e7160 100644
--- a/examples/complete/main.tf
+++ b/examples/complete/main.tf
@@ -59,10 +59,14 @@ module "opensearch" {
   }
 
   cluster_config = {
-    instance_count           = 3
+    multi_az_with_standby_enabled = false
+
+    instance_count = 3
+    instance_type  = "r6g.large.search"
+
     dedicated_master_enabled = true
+    dedicated_master_count   = 3
     dedicated_master_type    = "c6g.large.search"
-    instance_type            = "r6g.large.search"
 
     zone_awareness_config = {
       availability_zone_count = 3
@@ -150,6 +154,11 @@ module "opensearch" {
     }
   ]
 
+  # Off-peak window
+  off_peak_window_options = {
+    enabled = false
+  }
+
   tags = local.tags
 }