Force a one time only spawn point?

Is there a way in a custom mission to force the spawn point of human controlled flights to be "take off from runway" when the mission starts up, and then after a timer, say 5 minutes, to have any respawning done at the ramp so the runway doesn't get obstructed?

The reason I ask is I set up a co-op mission derived from an SP mission, and its a scramble to intercept an incoming raid on the base, and in SP it is "take off from runway", basically like an alert intercept that's sat at the bottom end of a runway, but in MP it automatically changes that to starting in a hangar, even though in the ME it says "take off from runway" meaning you lose time for taxiing out.

The only way this would be possible would be by using a script with the mission.

Ciribob made a fantastic script that activates or deactivates player slots by the use of flags.

You can read up more about it and how it works here - https://forums.eagle.ru/showthread.php?t=185436&highlight=slot+block

Thanks Mav :D

Take-off from runway does not work in MP at all. It automatically sets the aircraft to a ramp position with weapons running. It is done like this so that players don't accidentally spawn in right as another player or AI is landing.

Then perhaps that needs to be allowed as an override option to mission builders, for exactly the reason I posted, such as a two person co-op, so that you can simulate QRA type intercepts in MP without having to taxi out.