I've spent hours on end trying to figure out how to get client planes parked together on the ramp. I've done several tests swapping client slots and placing static objects in undesired parking areas, but the spawn order seems random somehow when the objects are first added in the ME (even if they retain their spawn points from then on, there's no way of choosing the initial ones when adding each air group).
I tested a mission with as many client slots as the airbase would hold and figured out which air groups were together on a ramp, but after changing those air groups to the type of jets and paintschemes I wanted they'd spawn between a taxiway and runway (on the grass) and blow up when starting the mission (FC2 bug?!)...
The only airbases I've managed to successfully spawn all jets in order on the ramp are Anapa, Guadata and Kobuleti and not because I did anything differently, just by the random spawn points set by default. There might be other airbases, but I haven't tried them.
This along with transparent models and all the flaws in the ME has to be one of the most annoying things I've found in FC2. Has anyone else found a workaround for not spawning in the parking areas or bunkers, but instead together on the ramp?