Fixture type channel sets

Hi. Is it possible to limit the Dmx to level of a channel set? It is automatic set to 1 level under the Dmx from level of the next channel set. Like one channelset Dmx from 51 and the next from 76 the Dmx to level is locked to 75. I want to set it to a lower level with a gap.

Thank you Ryan, but using dummies that way seems more like a workaround than a solution to me.