–Open doors for students to enter

–button 4 and button 5 are pressed

–travel to the fourth floor and open doors for students to exit

– The hallway button on the fourth floor signifies a desire to go back down, going up is already in effect

–close doors after students exit

–travel to floor 5 and open doors

–command to go down still in effect

–travel to 4th floor and open doors.

–button 1 is pressed

–close doors and begin traveling down

–open doors at 1st floor

–close doors and await further command