WW2 Paratrooper drop mission (Normandy)

[scouserlad13]

Well as you can see from the title i am creating a new WW2 paratrooper drop mission based on the mission that happened in Normandy a few hours before the D-DAY landings.

Anyway i am in need of some assistance, i cant seem to get all of the C-47's to drop the troops when they are flying over the Drop zone (DZ) and i was wondering if anyone could tell me how to get them to drop the paratroopers off as they fly over the DZ. Cheers for your help.