I have changed the HP by the methods
@Zbip57 and
@PhiliusFoggg mentioned on the map and used the new positions as "waypoints" to fly towards. For filming, it's a good way to have the mini tracking in the direction you want while you can concentrate more on getting the shot. For example by yawing to the side for a dolly shot etc. The mini is going straight to the HP but remember while Returning To Home, you can change all flight characteristics like, yaw, altitude, speed except for the course. You can cancel the landing and set a new HP and go to that "waypoint".