GMOD help

I have a problem, When I play multiplayer i want to have My things alone, . But
I will have it so that I cannot delete things to each other, Remove (pistol) will not work on his things,and He can not remove or somthing in my things, how do I get Zombies to spawne where I would like to, in any map? Need help: P

AND When you are playing multiplayer, If you create a door, The Another player can open it… HOW Can i Lock my Numbers, so HE cant open it or close?

Erm… What?
I think you’re asking for this:

“My things alone”

“Zombies to spawn where i would like to”

And about the door, try not using a button or…