Jingles,
Yes that is correct. For example; if I want to control all 8 64B PRO LED's at the same time I would "Group" the fixtures together, so that I only have to move 1 fader and control all 8 lights at the same time.
Your last post covers both the 192 and my dmx? I understand you can "Group" fixtures together on the 192 as well as the software?