How to Set Global Quantity Rules on Modifier Product Groups: Step-by-Step Guide

Log in to the Management Center (MC) with your Brand Manager credentials.
Navigate to the Product Groups page under Menu in the MC.
Select the modifier product group to which you want to add global quantity rules.
Select 'Contains products' tab.

Minimum Quantity - The minimum number of products a customer must select within the modifier group.

By default, the minimum quantity is set to 0, meaning the customer is not required to select any options.
If you enter 1 or more, the customer must select at least that many options from the modifier group before proceeding.
This field cannot be left blank.
The minimum can not be a number greater than the max quantity set.
The minimum can not exceed the number of product within the group.

Maximum Quantity - The maximum number of products a customer can select within the modifier group.

By default, the minimum quantity is empty, meaning the customer can select as many options as they want.
If you enter 1 or more, the customer will be limited to selecting a maximum number of options equal to the number you've entered. For example, entering 3 will allow the customer to select up to 3 options, no more.
The max quantity can not be a number smaller than Min quantity
If you have preselected products, the maximum quantity cannot be less than the sum of all preselected products in this group

Maximum Single Quantity - Defines how many times can customers select any single product.

By default, the maximum single quantity is set to 1, meaning the customer can select a product only once.
If you enter a number greater than 1, the customer will be able to select a single product in the modifier group up to that many times.
The maximum single quantity cannot be greater than the maximum quantity
The maximum single quantity cannot be less than the preselected quantity on a product

Maximum Quantity per Product (Quantity Limits)

You can further limit the number of specific products a customer can select, independent of the global maximum quantity. For example, you can set a maximum of 5 for the entire product group, but limit the customer to selecting only 2 Bacons and 1 Cucumber.
To enable maximum quantity per product, turn on the 'Preselected & Max Quantities' toggle.
For the products you choose, enter their maximum quantities.
The maximum quantity per product cannot exceed the maximum quantity for the entire group.