hey,
Frist you place a UH-60 with the name helo1
Then you make a group and name each unit like g1,g2,g3...
In the init field of each unit you give the command of beiing in helo1 like: this moveincargo helo1
Then you make a trigger somewhere where you want to let them jump. you group the trigger with helo1 and it activates when vehicle is present, so you have to make waypoints for helo1 to cross the field of the trigger. In the On Activation field of the trigger you type:
[] exec "parachute1"
Then you make in your mission folder an script called: parachute1
in the script you type the actions for each unit of the parachute group. like this.
g1 action ["eject", helo1]
~0.75 (this is the time in sec. between the jump of g1 and g2)
g2 action ["eject", helo1]
~0.75
g3 action ["eject", helo1]
ect.
When your para`s get killed in the jump you place a waypoint before reaching the trigger with in the On Activation field: helo1 flyinheight 100
well I hope it works and succes