OK it works now! I think it maybe worked before, but my eyes were expecting it to appear over or under the Bevel modifier window, and I don’t think I noticed that the window extended below the bottom of the screen, as your screen grab shows. I’m used to the Bevel window being much smaller, but forgot I have several sub menus open that extend the window considerably.
I will pay more attention to such things before requesting help again…
Thank you once more!