Deathwatch Kill Teams

I want to include Deathwatch kill teams in my Daemonhunter/Witch Hunter forces. However, the Deathwatch kill teams are only available in the Imperial Guard rosters. How do I go about changing the settings to allow them to show up in other rosters? I am using Army Builder version 2.2c and have poked around in the AB Creator, but cannot seem to even locate the Deathwatch in any of the AB 40k files. Please, anyone savvy in the use of these, please help me out, it will be greatly appreciated.