Duplicates for different resolutions

I have some ripped CDs and bought the corresponding hires versions too. They are displayed as separate albums.

How is it possible to have only one album displayed which shows “other versions”?

Best way: if some are identified and some not, identify them all as the same and Roon will automatically stack them.

Sledgehammer way, when unidentified or some are eg special editions with different tracks: highlight the album and select Edit then “Group Alternate Versions” (NOT “Merge Albums”).