Use it like a real lift, obviously. In this project, you can go outside the lift by clicking the outside of the lift, but you can only do it if the lift isn't going anywhere. You can go back in by clicking the lift from outside. Also, when you click the green flag, both you and the lift start on a random floor. :)
Thx to @numberboy9 and @ThyssenKruppKone. 13, 12 and 10 are locked off. Sorry they are private floors.
