Team Foundation Server
In this page of TeamCity Add-in options, you can enable and configure integration with Perforce VCS. If your solution is under Perforce, this integration will enable you to perform personal build, remote run, pre-tested commit and analyze changesets, builds and tests
Enable Team Foundation Server support
Select this checkbox to let TeamCity Add-in access your Team Foundation Server VCS. If TFS support is configured in Visual Studio for the current solution, TeamCity Add-in will automatically detect all necessary settings.