How do you get the ground equipment to come to you plane?
and how do you tow your plane from the gate?
and how do you move the gates?
To get a pushback from the gate press shift+P
The rest you can't do in F$04, Just Pusshback (sHIFT_P)
Download the keyboard commands that should help with everything.
https://flyawaysimulation.com/downloads/files/1333/fsx-controls-keyboard-commands/