Hey no problem, if you need to test weapon loadouts etc and don't need enemy players you can launch the mod then create a server in the game options and run around and test loadouts to your hearts content.
If you do need enemy's present and you need to duck in and out of the server then I will suggest that if you can avoid it, don't do it when server is maxed out and also if you're playing freeze tag and need to change something, don't leave when you are frozen wait till you get defrosted before leaving and returning.
That should keep anyone from getting pissed off . Good luck and hope you get it all sorted so we can kick your ass rofl.
Any dramas pm me and I'll try my best to sort you out.