A: Click the "reorder categories" button at the top right of the Menu Review page.

This will bring up the category panel on the left. Hover your mouse over the category you wish to edit. Click the pencil symbol to edit.

This will open the fields so you can edit the category name or description.

Press "Update" when you're done making edits. Press "cancel" if you decide you don't want to make any edits or don't want to keep the edits you made.