How to manually change the gravity with EgoMoose's Gravity Controller

Hey developers,

So I asked earlier about this but I didn’t get a clear answer, I got told there are documentations for the gravity controller but I don’t understand how I would change the gravity manually even with the documentations, can anyone explain how that would work? When I’m talking about gravity I don’t mean workspace gravity of course.
(So I don’t want the gravity to change when touching a part but that its an actual function)

Any help is highly appreciated!