If a label style supports the use of tags and tables, there are a few unique properties you can manage in the style by changing settings in the Label Style Composer.
A single label style can contain settings for both the label mode and the tag mode. You do not have to have separate label styles set up for tags. However, it may help you manage your drawings (and prevent additional styles from being created automatically) if you set up a style with its default state set to tag mode and give the style an explicit name.