Thank you. Yes, all 15 fixtures are identical. Although we do see adding effects to them individually, we'd like the idea of grouping them so that we can add "global" effect -- such as a chase (for example) or butterfly effect that will run through the group.
This was easily doable in Vixen. Is xlights not as set up for that?
Regarding grouping per model, how would I go about that? To setup these DMX fixture, I created one using the DMX floodlight model, set up the channels, then copy/pasted 15 times in Layout.
Appreciate your help!