Each of the eight LFOs can be set to monophonic or polyphonic, but only one can be polyphonic at a time.
There is a small button labeled “P” in between the RATE and DEPTH knobs.
Engaging it makes the selected LFO polyphonic, meaning each note will trigger its own LFO, instead of all notes sharing the same one.
*To demonstrate this, Right/Control-click on the FINE PITCH knob and select “Modulate with LFO.” Next, select the LFO as the Source in the Modulation Sidebar, then load the preset “Delayed Vibrato” from the LFO Presets menu. In Monophonic Mode (“P” OFF), quickly arpeggiate a chord and hold it. You’ll notice the Pitch of all notes is being modulated simultaneously. Release the chord and engage the Polyphonic LFO (“P” ON). When you play the chord again in a similar way, each note’s Pitch will be modulated independently.