Sorry for not explaining.
1) Copy it to your mission folder
2) Open up mission editor
3) Add corresponding markers (i.e. morton, lemoule, airfield, lamentin, and regina marker)
4) Open player's field.
5) Write in the init: "this addAction ["Teleport", "teleport.sqs"] (or whatever you named the script).
6) Test it.
Hope that helps,
Krieg