How can I use my created map in shootergame?

How can I add my maps to the shootergame and be able to load them thru the menu?

I want to try them out multiplayer but when I open the console and say OPEN MYMAP -LISTEN it forces me back to the menu which of course does not offer my map.

I have dug thru the code some but I am not sure how this is setup config wise or other.
I also have a gamemode which I tried to use with the existing maps but of course it forces it to FFA or TDM and does not load my gamemode.