From the Owner Dashboard, click on Restaurant
Click Menu
Click Categories
Click the category you want to work with
Once inside, scroll down to the items section
Each one will have a set of dots next to it. Click those dots to drag and drop. The order here will be the order shown on the website.
Click Save Category at the top when done
How do I change the order of items in a category?
Change the display order of items within a menu category on your Owner website.