So with your help above I think I've got the set-up correct. Jon, I actually appreciate you preaching

Under the Nutcracker tab, I don't have a Update Grid box under the Combined Effects group on the lower left hand corner of that tab. I see it on Sean's Jan. 9th tutorial, an introduction.
There is a vertical line between the preview window and the RGB sequence box. When I hover the cursor over the vertical line I get a doubled side arrow, however I can't move the line.
Oh, I'm using version 3.3.0.
Obviously I need the update grid box. Any suggestions?