when you want to make more than two ugx mods maps do you have re extract the standalone and then change the certian folders to your map name or can you just overide the old map name with new one?

Just follow the tutorial again from when he generates a new map. Once you have a working UGX-MOD directory you only have to change a couple things each time you want to make a new map such as the map name within the file "main.menu".