After rebuilding the bindings for my Thrustmaster T.16000M I thought I'd post this, a possible solution for GA/Warbird/general low and slow flying, which is what I mostly do.
Every joystick will of course be different, but having the function names to hand might be a help in setting up yours.

Here's an example in the sim, for assigning brakes, say, to the Joystick:
Search on BRAKE - here you see I already have chosen "Joystick Button 4" for parking brake but you can scroll through the options and then "Validate" your choice.
