When I run the tool and connect to the server and my project, I can see the TFS Group I created, i.e. 'Team Foundation Developers'.
However, when I assign some permissions in SharePoint and Reporting Services to the group and press 'Commit Changes' I only get errors, like this:
Added \ Team Foundation Developers SP Read Failed \
Added \ Team Foundation Developers RS Browser Failed \
Is the tool supposed to work with TFS group or is it for assigning individual users only?