I have a question. I can add a number of waypoints for a mission. And I can change the alitude of the aircraft while flying from one waypoint to another. However, I can't figure out how to change the alitude once the aircraft arrives at a particular waypoint.  For example, i arrive at waypoint number one at 90 feet. Is ther a way to lower the aircraft to 10 feet, hover for 15 seconds, then back up to 90 feet before moving to waypoint number 2. I would like to do this automatically.  

Thanks

I don't have an answer, but it would help others  help you if you said which App you are using...

Place another waypoint directly under/above the waypoint you want to descend/ascend from/to.  ````\/````

As Delta said, place waypoint 2 just below waypoint 1 and select an altitude, then waypoint 3 will be the same as waypoint 1.

That makes sense thanks fellas.