While I am not sure what the issue is with your setup, I can share our offices setting to establish our workgroup. Our Office runs on both Macs and PC's.
On our server, we have a workgroup folder, but the User Data and Preferences folder is set to be saved on each machine. I go through and customize each new release of VW and create an office Workspace, that then gets placed into the Workgroup folder under Workspaces, and then each machine can be the same setup and will have access to the same resources.
Hope this helps.