Use /gcg to create a global group.
To use the /gcg command, you must be a member of the Team Foundation Administrators security group. For more information, see.
Specifies the global group name.
Optional. Group description.
Required. Specifies the name of the application tier server.
Run this command on the local application tier computer.
Global groups are groups that are created directly on Team Foundation Server. This is in contrast to team project groups, which are associated with a specific project. Global groups can be assigned permissions to perform tasks on the Team Foundation Server itself, such as creating new projects or administrating users.
The following example creates a global group called "cwintst" with the description "Coho Winery Testers."
>TFSSecurity /gcg cwintst “Coho Winery Testers” /server:MyServer