Question about automatic windshield wipers

So this morning it was raining for the first time since I got my Prologue and the wipers did not start automatically, I had to turn them on from the manual control. I checked the vehicle settings and rainsense or whatever it's called was on.

I checked the manual to see if I missed anything and it says "When using an automatic car wash, turn the windshield wiper band to OFF. This disables the automatic Rainsense windshield wipers".

So I'm confused, if you have the manual control set to OFF the automatic wipers are disabled? Then what do you set the manual control to in order to get them to work?

Sorry if this has been addressed before.