A so-called "lobby system". Works well, IFF people understand that 1 passenger <=> 1 press, instead of having a group of (say) 5 having only one in the group pr

A so-called "lobby system". Works well, IFF people understand that 1 passenger <=> 1 press, instead of having a group of (say) 5 having only one in the group press, then all of them piling in. Used correctly, it can massively improve the elevator usage experience. Used incorrectly, it ends up being worse than a "indicate travel direction" system. Having used it in 3 (I think) buildings with this system, it was definitely used correctly in one, definitely NOT used correctly in another and in the third, I was mostly present sufficiently outside normal working hours that I cannot with certainty state how it was used.