add APM settings page

Author: mdbirnstiehl

solutions/observability/apps/applications-ui-settings.md

@@ -2,13 +2,71 @@
 mapped_urls:
   - https://www.elastic.co/guide/en/observability/current/apm-settings-in-kibana.html
   - https://www.elastic.co/guide/en/serverless/current/observability-apm-kibana-settings.html
+
+navigation_title: "Settings"
 ---
 
-# Applications UI settings
+# Applications UI settings [observability-apm-kibana-settings]
+
+
+::::{admonition} Required role
+:class: note
+
+The **Editor** role or higher is required to modify settings. To learn more, refer to [Assign user roles and privileges](../../../deploy-manage/users-roles/cloud-organization/user-roles.md#general-assign-user-roles).
+
+::::
+
+You can adjust Application settings to fine-tune your experience in the Applications UI.
+
+
+## General settings [observability-apm-kibana-settings-general-settings]
+
+To change APM settings, select **Settings** from any **Applications** page. The following settings are available.
+
+`observability:apmAgentExplorerView`
+:   [beta] Enables the Agent explorer view.
+
+`observability:apmAWSLambdaPriceFactor`
+:   Set the price per Gb-second for your AWS Lambda functions.
+
+`observability:apmAWSLambdaRequestCostPerMillion`
+:   Set the AWS Lambda cost per million requests.
+
+`observability:apmEnableContinuousRollups`
+:   [beta] When continuous rollups are enabled, the UI will select metrics with the appropriate resolution. On larger time ranges, lower resolution metrics will be used, which will improve loading times.
+
+`observability:apmEnableServiceMetrics`
+:   [beta] Enables the usage of service transaction metrics, which are low cardinality metrics that can be used by certain views like the service inventory for faster loading times.
+
+`observability:apmLabsButton`
+:   Enable or disable the APM Labs button — a quick way to enable and disable technical preview features in APM.
+
+`observability:apmServiceGroupMaxNumberOfServices`
+:   Limit the number of services in a given service group.
+
+`observability:apmDefaultServiceEnvironment`
+:   Set the default environment for APM. When left empty, data from all environments will be displayed by default.
+
+`observability:apmEnableProfilingIntegration`
+:   Enable the Universal Profiling integration in APM.
+
+`observability:enableComparisonByDefault`
+:   Enable the comparison feature by default.
+
+`observability:enableInspectEsQueries`
+:   When enabled, allows you to inspect Elasticsearch queries in API responses.
+
+## APM Indices [apm-indices-settings]
+
+The Applications UI uses data views to query APM indices. To change the default APM indices that the Applications UI queries, open the Applications UI and select **Settings** → **Indices**. Index settings in the Applications UI take precedence over those set in `kibana.yml`.
+
+APM indices are {{kib}} Spaces-aware; Changes to APM index settings will only apply to the currently enabled space. See [Control access to APM data](../../../solutions/observability/apps/control-access-to-apm-data.md) for more information.
+
+
+## APM Labs [observability-apm-kibana-settings-apm-labs]
 
-% What needs to be done: Align serverless/stateful
+**APM Labs** allows you to easily try out new features that are technical preview.
 
-% Use migrated content from existing pages that map to this page:
+To enable APM labs, go to **Applications** → **Settings*** → ***General settings*** and toggle ***Enable labs button in APM**. Select **Save changes** and refresh the page.
 
-% - [ ] ./raw-migrated-files/observability-docs/observability/apm-settings-in-kibana.md
-% - [ ] ./raw-migrated-files/docs-content/serverless/observability-apm-kibana-settings.md
+After enabling **APM Labs** select **Labs** in the toolbar to see the technical preview features available to try out.