the first pic shows the audible speed limit alarm.
Set it to the desired speed and when your cruising if you exceed this speed, you will here a chime warning to back off the throttle (exceeding desired speed limit)
Programming the theft deterent divise is a little more complicated and I suggest you refer to one of the 3 series guys as this was common on those cars also... If you set a code and can't remember it, just disconnect the battery for 20-30 minutes and the code will reset...
Cheers,
Fern