Sorry, I grabbed the wrong link, and now I can’t find the one I was looking for. But the work-around involves cloning the login item and storing one of the custom field values (e.g., an answer to a security question) in each of the cloned items.
Ahh. No worries, thanks; that worked, somewhat to my surprise. Since the security question comes on a second page separate from the un/pw, I hadn’t tried that, but it does the trick. A little clumsy for maintenance, so my feature request stands – but I appreciate the workaround!