Running two sitl models in mission planner

Please provide a complete example of a quad and a rover and python script. Mission: rover moving between “rover” waypoints, quadcopter takeoff from rover, when button A is pressed quadcopter flys to the next “quadcopter” waypoint relative to the rover and loiters there, when button B is pressed quadcopter flys to home specified relative to the rover, when button X is pressed the quadcopter disarm, and when button Y is pressed toggle between auto and stabilized. First implement as SITL. In hardware, the rover will be replaced by SBG Equinox-D.

Explain step by step like I’m 5 years old.

So far I have

Start quadcopter
cd ~/ardupilot && sim_vehicle.py -v ArduCopter -f quad --console -I 0 --use-dir copter0

Start rover
cd ~/ardupilot && sim_vehicle.py -v Rover -f rover --console --map -I 1 --use-dir rover1

Start mission planner
cd ~/MissionPlanner/ && mono MissionPlanner.exe

Mission Planner connects to the quadcopter

The next step should be to enable multiple vehicles in mission planner, but I haven’t found where to set that.

Then the steps would be to assign the buttons.

Also, there is a gimbal with a camera. Can this be simulated / evaluted in mission planner? Hardware is gremsy t3