how do u add a custom lvl map in a custom map.

What do you mean a custpm level? You mean the sides or what?

I'm not quite sure what he's saying, but he might be asking how to make a custom minimap for his custom map, if so then there is a link in the "Everything You Need thread" to a tutorial that will explain how to make one.

a custom ingame map that u see when u press m

It is custom. As you modify your map it will modify itself.

thx.