1. Select the menu that you want edit 






2. Click the Manage Menu button in the menu's settings panel or control box. 






3. Click Add Field in the top right of the Manage Menu Items window.




4. Select a field type and title and click OK.






5. You can now set what each item will display in the new field. For the field to appear in the item template you will need to assign it to a style component. Click here to learn how.