You can determine if customers are required to order a minimum number for this specific menu item.
For example, you can set the minimum quantity of a sandwich item to be 10 if you require a customer to order at least 10 sandwiches for a catering order. Let’s say each sandwich costs $2 per item. Because you set the minimum quantity to 10 sandwiches, the minimum price of this item will be $20 on the menu ($2 per sandwich * 10 sandwiches = $20).
The customer will not be able to order fewer than 10 sandwiches because of the minimum quantity restriction. However, the customer can order more than 10 sandwiches.