If you happen to own a Sony a7iii then there is a great YouTube vid from MAKE. ART. NOW. with a perfect setup of the custom buttons and functions. I’ve been using his settings for a couple of weeks and getting along with it really well, its speeds up your shooting so much. However, sometimes I forget the buttons, so I threw together a super quick cheat sheet to reference until i’m fully accustomed. You can use it too if it helps.