Thanks for trying. Those keys are used if you are adding passengers beyond the jetway. If you have an airport where you can see inside, thru windows, or a plane is on the tarmac, you can add passengers going into, out of, and thru the terminal. In the "customize airport positions" screen, select Customize by the passenger waypoints. A blue marker will appear by your plane. Use the arrow keys to move the marker where you want the passengers to walk to, the "Q" or "Z" key to adjust the height. Use the F6 key to place another marker to create a path. It's pretty neat ands just one more aspect to the simulation. I hope I explained it correctly.