I am struggling trying to get a foot pedal to turn on/off the PSR's vocal harmonies.

With the kb off I connected a yamaha pedal to the pedal 2 input.

Turned on kb, then hit menu, then assignable, then selected harmonies in the box labeled pedal 2.

There's no SAVE icon on that page.

The harmonies are now on, no matter I do with my pedal. I also notice that on the keyboard "Voice effect" section, the red light does come on and then go off every time I step on my pedal, BUT, the harmony is on regardless if it shows on or off in that section.

I've read the owner's manual and the reference manual on this task, but I'm doing something wrong.

I've looked for a video tutorial on here, the psr tutorial site and You Tube and I've come up empty.

Are there any easy to understand instructions on how to do this?