The behringer has a paging system remember.
So those 8 nobs at the top, are actually 32, as you have 4 banks of 8, and just use the page button to scroll to the next bank of 8.
I use the 8 faders for the vols of 8 channels, with filters on the 1st 8 above the faders on page 1.
Page 2 is synth controls
page 3 fx controls, and page 4 is extra volume controls, and master output fx controls.
Works wicked.