ADJ mega bar split question

I have ADJ mega bars that I'm using for cyc lights. I think they can be controlled in a way that splits the bar up into smaller sections. Say 1/3 of the bar red, 1/3 blue, etc. But when I patch it into my eos digital board I can only control the entire bar. The profile is set at ch 7 (34 channels) and the bar is also set to ch 7. 

I'd love to create an effect that chases color through each of the individual section and make the cyc wall even more colorful at points in my show, but I can't figure out how to program the individual sections. I'm relatively new to lighting, so let me know any suggestions.