help spawn restored unit from map one to map two

Solar Conquest, the famous OG Space RTS Custom game now has a missing vitally important unit from it. The mineral mines, It may also have missing asteroids in space. But now the game is rendered unplayable because there's no way to harvest one of the resources. Who knows what else is missing in...

Can somebody help me add Unit/character Selection to this testmap without destroying the camera-setup? =) download and edit the map as you like. Credits will be shown in later progress of projects, -if I get that far. I am not good at JASS or triggering at all, I am more the creative person...