When you create an alert in TFS 2013, you must specify the area in which the alert sites are located ("I" or "Team"). In TFS 2013, each team project will have a default command, so you can configure the alert to be a specific team alert, or a subgroup if you want the alert to be routed to a subset of the overall team project. When you set up an alert in the alert explorer, click the Subscriber drop-down list in the upper right corner and select the appropriate command.
