Macintosh Manager 1.0 and later
The Workgroup Data Volume is where all documents are stored while in a particular workgroup. It includes the user's documents folder as well as workgroup-specific folders (for example, Hand-In and Workgroup Shared folders).
With Macintosh Manager 1.0 and later, the Workgroup Data Volume is used to configure another documents storage location. For more information, refer to technical document 31265: "Macintosh Manager 1.3: Saving Workgroup Documents to Another Volume"
Macintosh Manager 2.0 and later
The Workgroup Data Volume is where workgroup-specific documents are stored, similar to Macintosh Manager 1.0. However, users' documents are no longer a part of this volume. Users' documents are now specific to each user's account (the 'Home Directory' option in Server Admin).
With Macintosh Manager 2.0 and later, the Workgroup Data Volume will not change the user's documents location, only the workgroup-specific folders (for example, Hand-In and Workgroup Shared folders). To change where users store their documents, use the Home Directory feature of Mac OS X Server 10.0 Server Admin to assign a custom location.