The Line 6 is setup in Cantabile as a Midi Controller. Basically, you can use the “learn” feature, or parameter learn to bind the Line 6 switches to whatever you want within the plugin. As far as state changes, I created a binding in the “background rack” to change states, since I use it in every song. That way it is universal to every song…no need to repeat the binding in every song.
I don’t use the pedal switches for Leslie speed (but I could very easily), because of the 55 years I’ve been playing Hammonds, most were fitted with a Half-Moon switch. So, it is a long gained habit, and I find it more comfortable to use the key controller “Mod Wheel” for Leslie speed. Just my choice. A few Hammond plugs have conveniently set the brake at half way point on the mod wheel.
I am not aware of any videos showing the process you are seeking. But, here is the binding info from Brad’s excellent manual:
BTW…if you plan to use multiple pedal switches to control many things, it would be smart to use a pedal with more than four switches, which is all my pedal has. My pedal is all I need, and conveniently fits perfectly under my rig, alongside my sustain pedal. The expression pedal on the Line 6 works perfectly as the “swell” pedal on all the Hammond plugins.