Whan I was flying a Futaba 6DA transmitter I made a little diagram of the DIP switches and mixing pots and I drew in the positions for each model on small cards. I kept these in my flight box. When I brought out a model I pulled the little card and set the switches and trim pots.

The hard part was setting up each plane at neutral trim. Back in the bad old days when you had to adjust the linkages instead of just the electronic end points and sub trims. ;-)