Umm... No. This is plain wrong. There IS NO MULTIPLAYER SCRIPTING. At all.Thanks for clearing that out, it was a wrong suspicion.
If you're planning to have chinooks and MCVs for whatever reason in a multiplayer map, make the map first as a 1x1 map just to make things work and after that you replicate things to the number of players you want. Diminishing risks will make your life easier. Another tip is to create a single player mission in an empty map size 15x15 and you make triggers and teamtypes work for the human player alone, later you copy and paste the command lines to the other MP map and adjust the parameters accordingly.