how to create a "coop" mission?

[David198502]

well i have done some missions with c# code, but only with the help of Kodiak, and honestly, i have forgotten everything about it(unfortunately)

the spawnpoint already works online....
what i do want, is to have a group of spits, and another group of hurris spawning infinitely after a certain time.meaning, every 10 minutes the spits spawn, and the same with the hurris, but delayed for 5 minutes.
so that every 5minutes a new group spawns, alternating spits and hurris until the end of day...

after both groups have reached their waypoint, where they should attack us("free hunt" or "attack fighters" dont know which is more effective), they should head to their airfield, where they get "destroyed" again, so that the mission does not have thousands of planes in the air after a certain time.