To add a tag to a project, open any project on the calendar.
Underneath the project's title, begin to type the tags you want to add to your project. To add additional tags, click [enter] or [,] on your keyboard. To delete any tag inside of a project, click 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 a project.