Create SSOT for metrics dashboard settings

Rather than two overlapping and contradictory sets of instructions,
have one set of instructions for how to manage metrics dashboard
settings.

doc/operations/metrics/dashboards/index.md

@@ -116,14 +116,9 @@ Your custom dashboard is available at `https://example.com/project/-/metrics/cus
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/223204) in GitLab 13.2.
 
-To manage the settings for your metrics dashboard:
-
-1. Sign in as a user with project Maintainer or Administrator
-   [permissions](../../../user/permissions.md#project-members-permissions).
-1. Navigate to your dashboard at **Operations > Metrics**.
-1. In the top-right corner of your dashboard, click **Metrics Settings**:
-
-   ![Monitoring Dashboard actions menu with create new item](img/metrics_settings_button_v13_3.png)
+Users with project Maintainer or Administrator
+[permissions](../../../user/permissions.md#project-members-permissions)
+can manage [the settings](settings.md) for your metrics dashboard.
 
 ## Chart Context Menu
 

doc/operations/metrics/dashboards/settings.md

@@ -21,8 +21,8 @@ time zone, but you can display dates and times in UTC format. To change the
 time zone:
 
 1. Sign in as a user with Manage Project Operations [permissions](../../../user/permissions.md).
-1. Navigate to **Settings > Operations**, and scroll to
-   **Metrics Dashboard**.
+1. Navigate to **Settings > Operations**.
+1. Scroll to **Metrics Dashboard** and click **Expand**.
 1. In the **Dashboard timezone** select box, select *User's local timezone*
    or *UTC*:
 
@@ -37,8 +37,8 @@ You can add a button on your monitoring dashboard that links directly to your
 existing external dashboards:
 
 1. Sign in as a user with Manage Project Operations [permissions](../../../user/permissions.md).
-1. Navigate to **Settings > Operations**, and scroll to
-   **Metrics Dashboard**.
+1. Navigate to **Settings > Operations**.
+1. Scroll to **Metrics Dashboard** and click **Expand**.
 1. In **External dashboard URL**, provide the URL to your external dashboard:
 
    ![External Dashboard Setting](img/dashboard_external_link_v13_1.png)