Also there are choices on what to optimise for. Our elevators are triggered by swiping your company card, which then tells the elevator which floor you're going

Also there are choices on what to optimise for. Our elevators are triggered by swiping your company card, which then tells the elevator which floor you're going to. You're then assigned one of 16 elevators. Elevators frequently wait for a couple of minutes for more people to arrive. So instead of which floor(s) should I now go to, there's also how long should I wait to go there. I suspect the algorithm might be optimized to some degree for minimizing number of journeys (to save energy or whatever) instead of/as well as average/maximum wait time per person.