You can add tracks to Listed Track Groups directly from the Edit Track Window using the Track Groups tab. This section shows all the track groups that the selected track currently belongs to and allows you to manage their membership.

To add a track to track groups, click the Add Track Group button which will open a popup window showing all available Listed Track Groups. You can select a single track group or use Ctrl or Shift click to select multiple track groups, then click OK to add the track to those groups. To remove a track from track groups, you have two options: click the Delete button beside a specific track group to remove it individually, or select multiple track groups and press the Delete key to remove them all at once.