All the ones I have seen and worked on they are automatic. You just make sure it IS powered up and you just take each TV and set THAT TV to the HDMI that is connected. You should NOT have to do anything other than set each TV to the HDMI port that is connected. For instance. You have DVD and SAT HDMI boxes(1 for each). The Sat HDMI is connected to each TV's HDMI-1 and the DVD is connected to the TV's HDMI-2. All you do is set each TV to HDMI-1 to watch SAT and if you want to watch a DVD, you just change that TV to HDMI-2 from the TV remote. Doug