Funny, I just came here and was searching the forums for your exact issue. I don’t have a solution, but just wanted to chime in that I am looking to do exactly the same thing. I’ve actually run into quite a few projects where this would have come in handy.
The current project I’m working on has over 60 pages, and I want to use a relationship field but only have them choose from the child of a specific parent (roughly 5 currently). Would make it so much easier for the client rather than having them scroll through 50+ pages or manually search for each.
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