This is resolved, I think. Not getting any reply here (and with plenty of time on my hands sheltering in place) I decided to explore "EasyStep", which I usually ignore. On the California return EasyStep Estate and K-1 Adjustments page, at the bottom of the page there is link text that says "Why can't I enter lines 13a, 13b, and 14?".
Clicking that brings up a help window, which among other things says
"Line 14 has no effect on your tax return, so we don't provide an option to enter it"
So I guess I'm done. It would have been nice if the CA K-1 Worksheet help said that as well.