You want to find whatever the mapping is for TMS Up - I have this mapped to POV Hat Up on my stick, as I’ve got head tracking. Handy in dogfight mode too as it will try to boresight lock - i.e. press TMS up, then whatever passes through the cross hair will get locked. It’s a useful way to get started. (Says the guy who has barely got started - I was completely hooked on Falcon 4 back in the day, then went Mac completely in about 2000, and have only just discovered BMS. What a wonder it is, but man, so much to learn!)