Q: various artist not in compilations

I am using iTunes 12.4.3.1 on a Mac with El Capitan.  I have discovered a section in my iTunes with compilations as a heading.  I also discovered compilations in my iTunes Music folder in the finder.  I also have 64 albums in iTunes that are listed as various artist, but do not show up under compilations.  I have both purchased from iTunes and discs that I downloaded to iTunes.  I have a two cd album, Forever, For Always, For Luther Vols 1 and 2.  Vol 1 is in the compilations grouping and Vol 2 is not.   How do  I get the various artists albums to move to the compilations heading?