Step 1; Get in.
Step 2; Wait for other people to get on and hold the door open for anyone who might not make it.
Step 3; Press the button of the floor you want to go to.
Step 4; Wait until the elevator reaches your floor.
Step 5; Get out once the doors open.
Step 6; Go to the area of that floor you wanted to visit.
Congratulations, you have completed the six steps required to not be a socially disruptive jackass