Hi Adam. When you are in the Emulation program and you click patch and then add you get the list of "manufacturers" then find the American DJ and then find your galaxian laser. Select the model by clicking on it and then select count for how many of them you have. Then hit the Add button to patch it into the program.
After it is patched into the program If you are in the window where you have a list of fixtures click the galaxian and then over to the right on the programmer side where you see buttons for beam, position, color mix, color fix, etc that is where you manipulate the DMX channels for that fixture.
Make sense?
Welcome to the forums.
Sincerely,