Biesse Rover 20 Drills hitting clamps

I have a Biesse Rover 20 running on NC500. It is currently set up to run clamping only, no vaccum. When drilling the bits are only about 3mm above the panel while it moves into position, so they are hitting clamps.
Can anyone explain to me how to adjust the distance the bits move above the material? Can it be done?

Change the "Safety" value in the drills. It's probably 20mm by default

F5 -> ENTER -> F9 -> PASSW:111 -> ENTER 2x