When you trigger a Compass Calibration, you flick S1 from position 1 to position 3, FIVE times.
Depending on whether you are in Phantom mode or NAZA mode, S2 operates differently:
In Phantom mode, to reset your Home Point, flip S2 from pos 1-3 FIVE times.
Rear lights will flash rapid green indicating success.
In NAZA mode, there are TWO resets available with S2, Course Lock, and Home Point.
To reset Course Lock (the recorded start orientation of the aircraft):
Toggle S2 from Pos1-2 FIVE times. Rear lights will rapid flash green indicating success.
To reset Home Point, while hovering at the desired location & altitude:
Toggle S2 from Pos 2-3 FIVE times. Rear lights flash rapid green indicating success.