Event Categories

Mouse over Structure then Taxonomy then Event Category

Event Categories — Screen capture illustrating the location of the Event Categories taxonomy.

On the Event Category list, you'll see a view similar to the adjacent screen capture.

To add new categories, click Add term
To edit any of the existing terms, click Edit adjacent to the term you wish to modify.

Event Categories List — Screen capture of the list of terms within the Event Categories taxonomy.

On the Add term page:

The only required field is Name. All other fields are optional.
Ensure that Published is checked.

After adding (or editing) a term, click Save.

Event Categories - Add & Edit — Screen capture illustrating available fields when creating or editing an Event Category taxonomy term.