In this section, we'll cover all controls to the left of the top keyboard manual.
Pitch wheel and Bend Depth- The pitch wheel is used to bend the pitch of notes (super duh, we know) up or down. It's hard-wired to the MIDI pitch wheel controller data. The Bend Depth knob sets the bend range in semitones from 0-12 steps.
Mod wheel- Sets the amount of LFO modulation applied. It's important to understand that the mod wheel works additively with the LFO Amount knob when the Wheel button is enabled in the Mono-Mod section. (This is explained in detail in the LFO Amount and the Mod Wheel - Important, please read this section of the LFO and Mono-Mod chapter.)
Upper and Lower MIDI Channel- These set the incoming MIDI channel for each layer, allowing layers to be played independently.
Upper and Lower Transpose- These toggle buttons transpose the Upper and Lower layers by an octave up or down. You could accomplish the same thing using the Oscillator Frequency knobs, but these are intended as quick performance controls.