That’s like the crosswalk button that does nothing. It’s there purely for the placebo effect.

See also: call elevator to your floor buttons

How else do you get on the elevator? Wait for it to randomly appear?

	▲	h3half an hour ago \| parent [-]
		They might be getting mixed up with the “close door” button, which is something always included because it makes people feel better but when you order the elevator you can choose whether it actually does anything or not