Put a blackhawk on the map, then a squad nearby, set a "LOAD" waypoint from the blackhawk to next to the blackhawk, then a "GET IN" waypoint for the troops nearby, then using 'SYNCRONIZE' at the top link the two waypoints together. that'll make the soldiers get into the Blackhawk.
Then set a simple move waypoint around the map to where you want to blackhawk to stop, then place a "UNLOAD TRANSPORT" waypoint where you want it to land, this will make the soldiers get out.
Anymore move waypoints after than will direct the helicopter elsewhere. If you want to move the people once they have got out set a "MOVE" waypoint for them back from the "GET IN" one.
This will make the men get in to heli, the heli fly them to the insertion place, drop the men off then fly away while the men carry on.
To get more units into the heli just syncronize them also to the heli when it first pics up people, you can also just get the heli to go back and pic more people up.
Hope it helps, my grammer may be slightly bad, so email me if you want more detailed help at snowdog.ash@hotmail.com
Thanks, Ash