Am I right in saying that the basic GPS cannot be used to enter a FP or a WPT? Is that a future feature?
Also I could not find a way to switch off the other 2 more fancy GPS's.
@Raidersan Not sure about your first question, but turn the COM volume knob on the 430/530 all the way to the left to turn it off. It's a little knob marked "C" on the left side of the screen
Currently the GPS 100 can only be used to view information on an already created flight plan (i.e. one created before the flight is started), as well as other info on fuel usage, speed etc.
We'll only be able to expand that functionality if Asobo provide greater control of the GPS/flight plan system via WASM gauges. That is currently very limited.