View content permission on single thread

El Porcharo

Well-known member
I'm willing to open a few threads that I only want to be visible to registered members within a node that is read-only for guest (they can read threads content).

I've been searching around the forum threads and within the add-ons forum without success, does anyone know if there is any add-on that allow this?
I remember @Kier answering my question during one of the XenForo Insights few months ago, saying that it is something very easy to code, eventually.

Any help?