Adding a new category
Click on the plus sign icon to the right of your menu name.
Input your category name and description.
Editing a menu category
Click on the edit icon to the right of your category name.
Adjust the category name and/or description.
Deleting a menu category
Click on the trash can icon to the right of your category name.
Click Ok to confirm.
Please note that if you publish item changes to your menu through Menu Management, you still need to synchronize, map, and publish your new items as normal. See here for more on how to map menu changes.