Raiju Ultimate Mapping

Hi guys, got a problem, I've just upgraded from the original Raiju to the ultimate for PS4, having an issue with mapping a button as it doesn't appear on the app, on my old Raiju I used to map the track pad press to one of the M buttons but I don't see that option in the app, just the other main buttons on the controller, I also tried manually mapping but I cant get it to go into mapping mode, the cog button just flashes... Any help/info would be appreciated.