How to open wasteland/zombies in map editor?

[aviax 10]

I was trying to create a zombie server for our guild, just for us to hang out in, but id like to add some things like weapons to specific classes and things to the map on the wasteland+dynamic zombie map, i unpacked the .pbo file in the MPmissions folder, which made the mission into a folder, but its still treated like the default missions like back to stratis that you cant open in the editor? I have PBOmanager and a few other pbo editors that iv tried so i doubt those are the issue, any tips or tutorials/videos or something along those lines would be appreciated? thanks! p.s. i am pretty new at scripting and map editing.

[jasin 1]

You need to unpack it into MyDocs/Arma 3 Alpha/missions.

Might be MyDocs/Arma 3 Alpha Other Profiles/Profilename/missions.