How do you add the administration tab for a gainsight user?

Hi Ben -

The user has to have a Gainsight licenses and the correct permissions to be a Gainsight Admin. Assuming they have a license, check if they have the Gainsight Admin permission set assigned.

Once that is done, the user can go into All Tabs (+ sign at the end of their list of tabs), select Customize My Tabs, and add it. If they do not see the Administration tab in the list, then they don't have access.

@Kristin is right Ben.  Specifically the Gainsight Admin and JBCXM_GS_Permission_Admin permission sets.