[DOC] Create management section and advanced settings documentation (#4876)

* Create management section and advaced settings documentation

Signed-off-by: Melissa Vagi <vagimeli@amazon.com>

_dashboards/management/advanced-settings.md

@@ -0,0 +1,23 @@
+---
+layout: default
+title: Advanced settings
+parent: Dashboards Management
+nav_order: 40
+---
+
+# Advanced settings
+Updated 2.10
+{: .label .label-purple }
+
+Use the **Advanced settings** page to modify settings that govern OpenSearch Dashboards behavior. These settings can be used to customize the look and feel of the application, change the behavior of certain features, and more. A view of the interface is shown in the following image.
+
+<img src="{{site.url}}{{site.baseurl}}/images/dashboards/advanced-settings-ui.png" alt="Advanced settings interface" width="700"/>
+
+To access **Advanced settings**, go to **Dashboards Management** and select **Advanced settings**. The page is divided into several sections, each containing a set of related settings. You can modify these settings by editing their fields. Once you've made the changes, select **Save** to apply them.  
+
+{::nomarkdown}<img src="{{site.url}}{{site.baseurl}}/images/icons/alert-icon.png" class="inline-icon" alt="alert icon"/>{:/} **Note**<br>Certain settings require you to modify [the `opensearch_dashboards.yml` file](https://github.com/opensearch-project/OpenSearch-Dashboards/blob/main/config/opensearch_dashboards.yml) and restart OpenSearch Dashboards.
+{: .note}
+
+## Required permissions
+
+To modify settings, you must have permission to make changes. See [Multi-tenancy configuration](https://opensearch.org/docs/latest/security/multi-tenancy/multi-tenancy-config/#give-roles-access-to-tenants) for guidance about assigning role access to tenants.

_dashboards/management/management-index.md

@@ -0,0 +1,26 @@
+---
+layout: default
+title: Dashboards Management
+nav_order: 110
+has_children: true
+---
+
+# Dashboards Management
+Introduced 2.10
+{: .label .label-purple }
+
+Dashboards Management serves as the command center for customizing OpenSearch Dashboards to your needs. A view of the interface is shown in the following image.
+
+<img src="{{site.url}}{{site.baseurl}}/images/dashboards/dashboards-management-ui.png" alt="Dashboards Management interface" width="700"/>
+
+{::nomarkdown}<img src="{{site.url}}{{site.baseurl}}/images/icons/alert-icon.png" class="inline-icon" alt="alert icon"/>{:/} **Note**<br>OpenSearch and OpenSearch Dashboards privileges govern access to individual features. If you do not have the appropriate access, consult your administrator. 
+{: .note}
+
+## Applications
+
+The following applications are available in Dashboards Management:
+
+- **Index Patterns:** To access OpenSearch data, you need to create an index pattern so that you can select the data you want to use and define the properties of the fields. An index pattern can point to one or more indexes, data streams, or index aliases. 
+- **[Data Sources]({{site.url}}{{site.baseurl}}/dashboards/management/multi-data-sources/):** The Data Sources tool is used to configure and manage the data sources that OpenSearch uses to collect and analyze data. You can use the tool to specify the source configuration in your copy of the [OpenSearch Dashboards configuration file]({{site.url}}{{site.baseurl}}https://github.com/opensearch-project/OpenSearch-Dashboards/blob/main/config/opensearch_dashboards.yml).
+- **Saved Objects:** The Saved Objects tool helps you organize and manage your saved objects. Saved objects are files that store data, such as dashboards, visualizations, and maps, for later use.
+- **[Advanced Settings]({{site.url}}{{site.baseurl}}/dashboards/management/advanced-settings/):** The Advanced Settings tool gives you the flexibility to personalize the behavior of OpenSearch Dashboards. The tool is divided into settings sections, such as General, Accessibility, and Notifications, and you can use it to customize and optimize many of your Dashboards settings.

_dashboards/management/multi-data-sources.md

@@ -1,8 +1,10 @@
 ---
 layout: default
 title: Multiple data sources
-parent: Discover
+parent: Dashboards Management
 nav_order: 20
+redirect_from: 
+  - /dashboards/discover/multi-data-sources/
 ---
 
 # Multiple data sources