Awhile ago i was playing around with the keyboard buttons and I somehow got ground services for the KH 737-700, It was a little box with Lights, GPU1 and something else, Under GP it had options (Airport Bus, Stairs, Cargo,) and Airport bus, Luggage buggy and so on would appear,On the right handside there was a diagram of the aircraft with arrows to the appropriate selection I haven't been able to get this up since no matter what button i press.
If anyone could help i'd appropriate it lot
Many thanks
Download and print this out, it should help.
https://forum.flyawaysimulation.com/forum/topic/21854/fsx-keyboard-commands/