It's my ASSUMPTION that the standard pitch-shifter and the harmonizer are grouped together in one display rather than separate. Not sure as I on't know this model too well. The octave control, though is a span. IT's the interval apart from the original note that you are to select with that control (within a SPAN of +/- 2 octaves). My
pitch shifter pedals have various intervals within +/- one octave and then shoot over two the second octaves. If it were a knob-up the middle would be unison.
To date, the technology doesn't seem to let the effect track your actual playing as it does just the notes so, if your guitar's intonation is out some or if you are bending quite a bit, it won't track well since your guitar would be spitting out notes that don't exist in the key you've selected and the processor can't figure out what harmonizing note to assign to it.
I've also found that tucking the Effect LEvel or Balance back (but enough to still tell that there is a harmony) helps make it a bit more natural sounding.
Mike 777 HAug