Combining CDs in Set or Tracks in Album

I have, for example, a 10 CD set of Nat King Cole. In iTunes, it’s one set with 10 Discs. In Roon, it’s 10 separate CD’s covers. How do I merge those?

Also, I have a “best of” with 100 tracks and each is separate with the same album cover. Need to merge those too.

Thanks -

Just select them all and then select edit and then select merge albums