If you want to individually control the LEDs, you must put each fixture on a seperate and individual DMX channel. The first fixture will be on address 1 or Dipswitch 1 on only. The second fixture will have to depend on how many channels the first fixture had. If the first fixture consisted of 7 DMX channels, the second fixture will be on address 8 or dipswitch 4 on only. Try this out. If you have any more questions, please email me at JoelChen@americandj.com. Thanks.