Just installed a MyQ Hub (MYQ-G0301) in my 3 car garage (2 separate doors). I'm programming the double door and after pressing the purple learn button on the Chamberlain LiftMaster opener both doors cycle (either open or close depending on state). After adding the double door I can cycle both doors by opening or closing the door. How do I set this up so that only the double door opens when using the app? I have a second sensor for the single door but haven't installed it yet.