How to use the jetways in FSX/How to load or unload passengers in FSX Edit
Line up your plane on the yellow marker, use the parking breaks here, then press Shift + E ( + 2,3,4,5 etc.) to open the doors or cargo doors. The vehicles will run on a timer to move, to move the jetway, simply hold Ctrl + J. You also need advanced animations in the graphics settings turned on.