This window, which is only available if CC4 SIF Agent has been installed, displays the name of the user's Primary Establishment. If the user is externally managed (i.e. managed outside CC4), then their DX GUID (the ID associated with the external system) and Personnel Reference IDs are also displayed.
A user with the Centralised User Management system role can alter the DX settings of externally managed users if necessary. Other users can only view the settings.