Creating categories is simple.
Click on Edit Categories from the administrator’s page and either type in the name of a new category or use the pull-down list to choose one to edit.
You can assign a color to the category so it will be easy to distinguish on the calendar.
Once you have created a new category or edited an existing one, the new name is automatically listed when you and your users view the calendar.
Don’t be stuck with generic category names. Create your own and change them whenever you want!