I tried hard to make this fixture myself but I could not find the possibility to make this feature.
The channels are:
1 mode(off-11 programs-auto-sound controled)
2 Master dimmer
3 Strobe speed
(this first three channels ar masters for all four led lamps)
4 spot1-red
5 spot1-green
6 spot1-blue
7 spot2-red
8 spot2-green
9 spot2-blue
10 spot3-red
11 spot3-green
12 spot3-blue
13 spot4-red
14 spot4-green
15 spot4-blue

I saw that this looks like some American DJ ledbars but they have the master channels in the end and not in the beginning like I described before.

I hope you can make this combination work so I can light up my band on the island Texel in Holland.

Thanks,
Ronald van Bommel