I'm not sure what you're asking. There needs to be involvement to set M1 or M2. I haven't played with it, but I'm sure it's like a press and hold or something like that to save it.

Just getting out and locking saves it to the fob. Unlocking/inserting key (this is an option for which) the next time will adjust back to this setting, if necessary.

To break it down. You adjust seat/wheel to X, Y, Z. You get out, lock door. Driver B comes in with Fob B, adjusts seat to A, B, C. No touching of the memory buttons. When Fob A is used to unlock the door, seat position X, Y, Z is loaded in automatically.