1. Log in to the background management system of the ordering machine and enter the "Food Management" interface.

2. Find the dishes whose quantity needs to be modified and click the "Edit" button.

3. Enter the menu editing interface and modify the menu quantity in the "Quantity" column. Generally speaking, the number of dishes can be set to integer or decimal, depending on the unit and sales method of the dishes.

4. Click the Save button after modification to save the modified food information.