Add Workspaces coming soon to GitLab

doc/topics/set_up_organization.md

@@ -10,6 +10,7 @@ Configure your organization and its users. Determine user roles
 and give everyone access to the projects they need.
 
 - [Members](../user/project/members/index.md)
+- [Workspace](../user/workspace/index.md) _(Coming soon)_
 - [Groups](../user/group/index.md)
 - [User account options](../user/profile/index.md)
 - [SSH keys](../ssh/index.md)

doc/user/workspace/index.md

+---
+stage: Manage
+group: Access
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
+---
+
+# Workspace
+
+Workspace will be the top-level [namespace](../group/index.md#namespaces) for you to manage
+everything GitLab, including:
+
+- Defining and applying settings to all of your groups, subgroups, and projects.
+- Aggregating data from all your groups, subgroups, and projects.
+
+Workspace will take many of the features from the
+[Admin Area](../admin_area/index.md), and there will be one workspace per:
+
+- Instance, for self-managed instances.
+- Namespace, for GitLab.com.
+
+NOTE:
+Workspace is currently in development.
+
+## Concept previews
+
+The following provide a preview to the Workspace concept.
+
+![Workspace Overview](img/1.1-Instance_overview.png)
+
+![Groups Overview](img/1.2-Groups_overview.png)
+
+![Admin Overview](img/1.3-Admin.png)
+
+![Admin Overview](img/Admin_Settings.png)