How do I edit category groups?

How to edit a category group:

1. Login using an account that has Administrator privileges.
2. Click your screen name in the upper right of the page, then click the Site Manager menu.
3. Click the Categories link in the left sidebar of the "Site Manager".
4. In the resulting page, click the Edit link next to the category group that you want to edit.
5. In the resulting page, edit the category group, then click the Save button.