I'm in a retirement community, we own an ETC Express 24/48 and would like to get some Led fixtures. Is there any way to operate the fixture without assigning it's DMX dimmers to a channel? As I understand it, I have 512 DMX dimmers, but our board only has 96 channels. Since our fixtures use 9 channels each that means we could only operate 10 fixture is using channels. On the other hand, if I can use all 512 DMX dimmers I could operate more fixtures. Other than operating the board using faders, cues, submasters and effects I'm pretty naive when it comes to lighting .