With the exception of a Mirrored configuration or a Direct / Asynchronous or Direct / Email configuration, whenever you wish to access data held in a remote workgroup, OfficeTalk must first connect to either the remote workgroup database directly, in the case of a direct configuration, or to a local copy of the remote workgroup database, in the case of a replica configuration.
When you have referenced a remote workgroup in Supervisor mode, then, provided that you have sufficient access, OfficeTalk will make the data held in the remote workgroup seamlessly available from all relevant modes.
More:
Viewing Diary Data in a Remote Workgroup
Viewing Group Data in a Remote Workgroup
Viewing Meeting Data in a Remote Workgroup
Viewing Contact Data in a Remote Workgroup