Adding REPLAYGAIN_ALBUM_GAIN and REPLAYGAIN_ALBUM_PEAK tag columns

I have installed mp3tag on Mac and I have managed to get REPLAYGAIN_TRACK_GAIN and REPLAYGAIN_TRACK_PEAK to appear as tag columns. However, I am also trying to add REPLAYGAIN_ALBUM_GAIN and REPLAYGAIN_ALBUM_PEAK as tag columns. This hasn't been successful for me.

When I go to the menu Settings >> File List ... and when I try to add %replaygain_album_gain% or %replaygain_album_peak% to that section, it does not display any album gain values for the tracks that I imported. I checked the sames files in Musicbrainz Picard and the values show up there. Am I adding album gain and album peak tags incorrectly?

I also need help to add Replaygain Track Gain and Replaygain Album Gain to the tag panel on the left so that I can batch remove the gain values for files I import.

Hello and welcome!

Do you see the values via the extended tags window at ⌘T?

It may be easier to create an action to remove fields that you do not want:

or the action with a list of fields to keep

Yes, this was the solution. I didn't realise that files needed to contain this info for it to be possible to use extended tags. Thanks for the help.