how do you add units to a map or a mission? 
I am working on making some colony games, With the computer player having a well defended base to start out with.  And the human player starting out with some units to build a base with. 
so I had made a nice little map and I came across a problem 

 I  don't have the slightest idea how to add units to the map   :blink:    <_< 
Thank you for your time 
spirit