A pity it doesn't happen that often. If the help queue is on, start helping the students listed on the queue. If the lab is not busy, you will probably spend most of your time in front of a terminal. Don't forget to remove the sign when you leave. The help queue is kept on the blackboard to the right of the Lambda Lounge.
Priority is given to the first of the above.
You are the one who decides if the queue is on or off. During the more quiet hours, handle the queue however feels most comfortable to you. Make sure to check the ON or OFF box on the Q board. The map of the lab with the machines numbered is posted on the wall by the board. Always erase the name of the machine off the Q before going to help the student , so that if there are any other LAs on duty, they can proceed to help the next person on the queue.