Help: Is it possible at all on the Yamaha Tyros or PSR2000, and with the chord fingering type set to: 'fingered' mode, to setup the chord recognition area to only occur to the RIGHT of the split point?

With the keyboard in split mode and the left voice set to: 'acoustic bass' and right voice set to: 'piano', I want to be able to play bass lines with my left hand while playing full chords and triggering the auto accompaniment (muting the auto accomp bass instrument of course) with my right hand.

Unless I'm overlooking something, it appears that it's only possible to set the chord recognition area (Style 'S') to occur to the left of the split point.

Thanks in advance for help with this.

Scott