I think this illustrates there is a learning curve even with just the 'simple' use of the car keys . One button press? two presses? both at once? none at all? Double locking , disabling key, changing battery?. Beeping if you leave the keys in the car? Remote unlocking and windows using key buttons or apps?
So many variations that i dont use, and may have forgotten about.

Am I the only one? Its a bit like on a computer - various alternative ways,shortcuts etc. I often only know one method - and not always even that.
My normal practice is to visually check the windows are up , and lock and unlock the car just by touching the door handles -then visually checking the mirrors have folded in. Then put the key into a faraday pouch . (but not too soon as the car wont lock/unlock itself

) I do sometimes press the lock or unlock button on the key rather than touch the door sensors. A bit old fashioned maybe.
Its not just the Jazz. Most recent cars have similar complexities.