Triggering servos while underway


I have built a boat and have it running autonomous way-point missions using ardurover firmware on qgroundcontrol as a ground station. I need the vehicle to activate three servos at specific points in the mission, then deactivate them after a being on for a few seconds. I am using a Hex Cube controller and have tried plugging the servos into both the AUX ports and the RC out ports and setting a “cycle servo” command at points in the mission but the servos do not activate at any point during the mission. I was wondering if anyone had any advice or input for how I might be able to accomplish this?

Thanks for any help given!

Under the servo tab in mission planner, find your servos’ corresponding channels. Then in the servo commands, specify those servo output channels.

Thank you for the help!