Help On Mapping Jog Wheels. Win 10, Djay Pro

Any tips on mapping jog wheels? I have a Gemini g2v running Djay Pro on Windows 10. The buttons (play/pause, start/stop) are pretty easy, but I’m having a hard time mapping the job wheels. Admittedly I’m new to mapping. Any tutorials specifically on jog wheels, or even better someone who’s mapped this controller?