Multiple mission planner on one Quad

I would like to have my quad flying locally on my CGS running mission planner and controlling it trough joystick (already doing it).

At the same time i would like to have my quad connected to a remote CGS (over internet) to control trough another joystick only the gimbal. Would it be possible?

At the moment i can fly my quad locally (trough IPMESH) or remotely (trough 4G) and have video and everything, i just would need to split the functions so that a remote user can control the gimbal while i locally fly the Quad.

Hope it is clear.