There have been quite a few requests for a single place to set permissions in TFS, SharePoint, and SQL Reporting Services.  The Developer Aftermarket Community Solutions team in Developer Division at Microsoft just released the first beta of an administration tool for this purpose.  Kannan, the lead developer on the tool, posted the announcement(screenshot).

Here is the description from the GotDotNet project.

The TFS Administration Tool allows a TFS administrator to quickly add users to all three platforms utilized by TFS: TFS, Sharepoint, and SQL RS, all through one common interface. The tool also allows administrators to change the current permissions on any of the three tiers, identify any errors, and view all of the users and their permission sets across TFS, Sharepoint, and SQL RS.

This tool was created by the Developer Aftermarket Community Solutions team in Developer Division at Microsoft.

Please give try it and let them know what you think in the forum.