The channel strip control section maps to ProChannel modules. You step through the modules of the selected channel by pressing the EQ button on the console. I use this constantly. It's very nicely implemented.
It's related to my greatest irritation, mind you. You can set up the console so it only shows channel strips shown in the on-screen console view. So you get rid of redundant midi track strips for mixing, and your physical console layout is nice and neat.
However, this got broken in X1 or X2, and never fixed, and if you use it that way now, it gets hopelessly confused about which ProChannel strip it's controlling. Since I use MIDI + Synth track rather than simple instrument tracks, this means I've got an extra completely redundant strip mapped to the console.
These are the kind of irritations I'm expecting more and more of as Sonar gets updated. Like I say, they're not working on it, or even testing on it as far as I can tell.
Again, I'm not trying to put anyone off, but it's quirky, and grows more quirky with each Sonar release. There will be a point when it's simply too painful to use.