Merging catalogs

I gave a Roon subscription to my son. He installs it and catalogs his entire collection. What if I then want to share my collection with him, including the metadata grooming I have done and the Tidal albums I have added to the library, can we do that? Is it possible to import and merge catalogs? Libraries, yes of course. But metadata?

Never mind. no need, after all.
We installed Roon for my son, didn’t bother with my catalog.
He is thoroughly impressed.