I have an older Liftmaster 8500 with a purple learn button and want to add MyQ capabilities. I'm confused with the gateway, home bridge, garage hub products that I see offered. I need help! Can someone advise what, if , and how this is possible: I would like to add a new opener that has the timers and the phone app to enable me to open the doors remotely. What do I need to accomplish this? BTW I have 2 doors both with the 8500's. Can any of the new hardware be shared?