That makes no sense at all.
Doesn't matter what position you have your seats programmed to, or what button (1 or 2) that you used to program it, you should be able to adjust/move your seat at any time, even while driving.
I move my seat all the time, especially on a long drive, just to alleviate saddle soreness.
The one thing you can't do however, is program the buttons while driving. You need to do that with the car stopped and in park. The seat should then be moved to whatever setting you prefer, and then you just hit set,1, or set, 2, whatever one you want.
Also fyi, programming the fob for the seat position is a separate function. The fob programming is not tied into the button(s) programming.
All this to say that, if the seat won't move using the levers on the side of the seat, (regardless of the button settings), then you need to see the dealer. Seat adjustment should always be available.