Sure thing. Imagine a metabox created by a an event calendar plugin. That metabox has date, time, etc in this metabox. There are hooks for me to append additional custom fields to this metabox. I want to add a relationship field to pull in post objects from a relevant cpt.
I can do this directly, but I really like the ACF relationship field UI, and we’re using ACF elsewhere so it’s worth using if possible.
Rich
