Move tasks to REST API reference

_opensearch/configuration.md

@@ -8,7 +8,7 @@ nav_order: 5
 
 Most OpenSearch configuration can take place in the cluster settings API. Certain operations require you to modify `opensearch.yml` and restart the cluster.
 
-Whenever possible, use the cluster settings API instead; `opensearch.yml` is local to each node, whereas the API applies the setting to all nodes in the cluster.
+Whenever possible, use the cluster settings API instead; `opensearch.yml` is local to each node, whereas the API applies the setting to all nodes in the cluster. Certain settings, however, require `opensearch.yml`. In general, these settings relate to networking, cluster formation, and the local file system. To learn more, see [Cluster formation]({{site.url}}{{site.baseurl}}/opensearch/cluster/).
 
 
 ## Cluster settings API

_opensearch/rest-api/bulk.md

@@ -2,7 +2,7 @@
 layout: default
 title: Bulk
 parent: REST API reference
-nav_order: 15
+nav_order: 5
 ---
 
 # Bulk

_opensearch/rest-api/cluster-allocation.md

@@ -2,7 +2,7 @@
 layout: default
 title: Cluster allocation explain
 parent: REST API reference
-nav_order: 30
+nav_order: 10
 ---
 
 # Cluster allocation explain

_opensearch/rest-api/cluster-health.md

@@ -2,8 +2,7 @@
 layout: default
 title: Cluster health
 parent: REST API reference
-grand_parent: OpenSearch
-nav_order: 45
+nav_order: 15
 ---
 
 # Cluster health

_opensearch/rest-api/tasksapis.md

@@ -1,10 +1,11 @@
 ---
 layout: default
-title: Tasks API
-nav_order: 25
+title: Tasks
+parent: REST API reference
+nav_order: 80
 ---
 
-# Tasks API operation
+# Tasks
 
 A task is any operation you run in a cluster. For example, searching your data collection of books for a title or author name is a task. When you run OpenSearch, a task is automatically created to monitor your cluster's health and performance. For more information about all of the tasks currently executing in your cluster, you can use the `tasks` API operation.