Update the Operations Dashboard docs

- Change image
- Change product tier
- Update the profile preferences docs

doc/user/operations_dashboard/index.md

-# Operations Dashboard **[ULTIMATE]**
+# Operations Dashboard **[PREMIUM]**
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/5781)
 in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.5.
@@ -13,15 +13,6 @@ dashboard icon:
 
 ![Operations Dashboard icon in top bar](img/index_operations_dashboard_top_bar_icon.png)
 
-The Operations Dashboard can also be made the default GitLab dashboard shown when
-you sign in. To make it the default:
-
-1. Go to **User Settings > Preferences**.
-1. In the **Behaviour** section, select **Operations Dashboard** from the **Default dashboard** dropdown.
-1. Click the **Save changes** button.
-
-![Change default dashboard setting](img/index_change_default_dashboard.png)
-
 ## Adding a project to the dashboard
 
 NOTE: **Note:**
@@ -31,10 +22,16 @@ If your project is private, the group it belongs to must have a
 
 To add a project to the dashboard:
 
-1. Search for a project using the **Search your projects** field.
+1. Click the **Add projects** button in the homescreen of the dashboard.
+1. Search and add one or more projects using the **Search your projects** field.
 1. Click the **Add projects** button.
 
-Once added, the dashboard will display the number of active alerts,
+Once added, the dashboard will display the project's number of active alerts,
 last commit, pipeline status, and when it was last deployed.
 
 ![Operations Dashboard with projects](img/index_operations_dashboard_with_projects.png)
+
+## Making it the default dashboard when you sign in
+
+The Operations Dashboard can also be made the default GitLab dashboard shown when
+you sign in. To make it the default, visit your [profile preferences](../profile/preferences.md).

doc/user/profile/preferences.md

@@ -79,6 +79,7 @@ You have 8 options here that you can use for your default dashboard view:
 - Your [Todos](../../workflow/todos.md)
 - Assigned Issues
 - Assigned Merge Requests
+- Operations Dashboard **[PREMIUM]**
 
 ### Project overview content