After reading every post I can find and playing around with parameters I've had no luck getting my copter to yaw towards a ROI.
I'm running 2.9.1 on a 2.5 Mega board with Mission Planner 1.2.32 mav 1.0.
I loaded a simple WP Mission and between WP2 & WP4 put point 3 as the ROI. I would have thought the copter would have 'looked' at the ROI point while traversing between the two waypoints.
What am I doing wrong? Am I missing an input in the parameter boxes next to the command?