System and Course Administrators may view, add, and remove tags from any course.
For all other users, tags are searchable and viewable in courses that a user has a role assigned.
To add or delete a tag from a course, click the Edit Course button.
The Edit Course view displays.
Scroll to the bottom of the Edit Course page view. The Tags: field shows tags that have already been added to the course.
To delete a tag from the course, select the tag to be removed and press Delete on keyboard.
To add a tag to the course, click the Tags: field. A dropdown will appear and show existing course tags. Select an existing course tag and press the Enter key, or add a new tag in the Tags: field and press the Enter key.
Select an existing tag and press the Enter key 
Add a new tag and press the Enter key