Just like @rogeriocouto says, you can do it this way, but its not a great way to do it because pedalboards can take several seconds to load (it has to close all the current plugins and open the new ones). Pedalboard presets are saved settings of a pedal board so with 1 click all the knobs and switches on the current pedalboard move to the new positions. So instead of a new pedalboard with just the delay changed, you have a different preset, this time with the delay switched on, that will load immediately so you can do it between the pre-chorus and chorus, for example. Presets save the current state of a pedalboard. Like a guitar tech taking a picture of a physical pedalboard you set in rehearsal then running on stage turning all the knobs and switches to that exact position, only faster and cheaper. 
Does that make sense?
Its likely the documentation is old, since pedalboard presets is one of the newer features.
yes, or pedalboard presets can change them.
Somebody should make a youtube demonstrating the different ways to achieve switching different sounds (pedalboards, presets, switchbox/toggleswitch etc.). I think without a DUO to try it with its hard to understand the subtleties. I wish I had time to do it.