Whenever I need to train people on
tracking I use a visual aid. I carry with
me in my toolbox 3 Lutron wall dimmers from Home Depot with the dial riostat control. I have them labelled ch 1, ch 2, and ch3. I will have the students use these 3 wall dimmers to set the ch 1 and 2 dials to full and the ch 3 dial to zero. "That is your
cue 1," I'll say. Then I have them set ch 2 to 0 and ch 3 at full for "cue 2" making sure they notice that ch 1 is still at full because it "tracked" through and I only needed "move
fade" instructions to my changed channels.
It sort of sounds confusing as I write it down, but I've found that in person, the visual aids help quite a
bit to get students to understand what is happening in the
console, and I have gotten positive
feedback from it, while it only cost me around 20 dollars for the dimmers.