Hi John, my method is as follows...I save my registrations for a song in Panel Memory 1 to 8,or part thereof, then save to SD card and record the folder and file no. onto the score sheet. (yes I use the music)! I also use foot pedal (4) to change Panel Memory, forward and back, stop/start rhythm,and Bank increment.
Each time I change songs I open SD card, put in the corresponding no. hit "load", and it takes about 3 seconds to complete.
Very little time taken and works for me.
You can also use just the Bank Increment pedal which gives you 13 changes of 8variations or 26 if you only have 4 registration changes per song saved in Panel Memory,and your songs are sequenced in the order you wish to play.
Hope this is makes sense John

Ray