Press and hold the MIC button (Top Right of panel)
Display screen will cahange to 'MIC REVERB AND EFFECT'
Press 'MULTI EFFECT SET' and scroll all the way down in the middle part of the screen. Second from last option is 'VOCAL EFFECT'. At the top left of the screen is 'VOCAL HARMONIZER'....

Have Fun Rog !!!
_________________________
Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)