Digital BW, The Print

Looking at the Ink Descriptor files in QTR I get the impression that
I could turn off particular heads in the 7000. Is this correct?

For instance, could I *only* use positions 1 2 3 and 6 for my four
greys? Would QTR know *not* to fire the heads in positions 4 and 5?

Thanks in advance for any help.

Mark Stracke

PS. I'm really liking this software!