Steps on how to use: 1: Click on the local door switch 2: Press either of the passenger door enable buttons and wait 3: When you can, press the whistle 4: Press Door Close 5: Whistle again after the sound is complete 6: Close the local door 7: Activate Signal Bell When you get a response to the bell, you can begin again. This is going to turn into an entire guard simulator.
I also added the keybinds if you know them so you can use them :)