Set Number of Channels to 125.
Set Number of Dimmers to 1024.
Set DMX Out 1 to 1-512.
Set DMX Out 2 to 513-1024. [-](If you can't find this setting, let us know and we can rework the chart for you.)[/-]
EDIT: From page 13-1 of MillenniumML V2.05 and later.pdf :
Delete dimmers 1>1024. Patch as below. You'll have to figure out the patching of dimmers 1>72 into channels (1>50) by yourself.
Here's how I would patch and address the fixtures. I don't know the Millenium console, but suspect it is similar to an Express/ion.
View attachment 6293
The 3 MAC700s (make sure they are in "16-bit Basic Mode") are addressed as 1, 24, 47 and are on Universe#2. The scrollers are addressed 70-75, also on Universe#2.
The Millennium ML probably allows you to call up a unit by "Fixture 1" or some similar name, and then populates its encoders with the parameters, so you don't have to keep referring to my cheat sheet.
Very detailed post, thanks!!
Using the first 50 channels as desk channels will definitely work. Thanks for the work and the image. This is definitely going to be saved and used if needed. I'm going to try Xander's approach first (just because I'm lazy and it may be a little bit easier).
If that doesn't work, yours definitely will!