Not getting it could some one help

I am quite good at figuring things out and Design/ Program a lot of events, BUT I am not getting the pixel mapping, I get the layout in plots I get the grid the box all that stuff.
But I (and forgive me if this comes easy to you out there) don't get the Hog layer ?
I had 60 Clay Paky B eyes 20k's on an event how do I get content up to them ?
Any Help out there, what do I need to do.

Thanks R