Hi,
On the xl setup tab , you map the channels to the Universes (you actually indicate that Universe 10 contains channels 1 -99 , U 11= 100 -250 etc)
Now on the F16 , you then map for each physical output , which universe is supported and how many pixel nodes (where a node is 3 channels).
So
Port 1 is Universe 10 , start Channel 1 Pixel count 33
Port 2 is Universe 11 , start Channel 100 Pixel count 50