@RustyR I suppose your post slipped through the cracks. To answer your question yes gSender is compatible with using joysticks and detached keyboards for manual machine control. MPGs in particular aren’t supported since GRBL isn’t really set up for that and neither are most hobby GRBL machines.
I’d recommend checking out one of the pinned gSender topics that discusses a neat mini-keyboard and shows how to get it set up on your machine - there are quite a few joysticks that have also worked out for users and we’re continuing to add more support as time passes.