Yamaha's multi-finger mode allows both single finger and standard finger of chords when this mode is selected. This allows you to rapidly change chords using either technique.
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)