Pretty sure I've seen where you can enter the URL for an entry type so Craft knows what page to display during live preview. But I can't find that now. I'm looking in the entry types, and I can't think of anywhere else it would be.
Am I going crazy? Where is that feature?
I see a field in the section settings called "Preview Targets". It says:
Additional locations that should be available for previewing entries in this section.
If this is it, the term "Additional" is a bit misleading.