To add a tag to content, open a piece of content on the calendar. Underneath the content's title, begin to type the tags you want to add to your content. To add additional tags, click [enter] or [,] on your keyboard. To delete any tag inside of the content, click the X next to the tag.
To edit or delete any added tags, go to the Settings > Calendar Settings page.
Any deleted tag can be added again by recreating the tag inside of content.