The various options are listed (all over the place, but not centralized in one single section unfortunately) in the owners manual. I think you could associate a seat memory allocation to one particular key and you could also have the car lock itself once it starts rolling sort of thing.
If you would be so kind to let your better half come close to the steering wheel, this is actually a nice feature as when you unlock the car, the power seats and mirrors move in accordance to which key that unlocks the car.
I think that's about it. But then again, go through the owner's manual just to be sure. Only dealers, unfortunately, could set/reset these settings so far.