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The default Magento 2 allows setting minimum cart quantity. But to set a minimum and maximum range for cart quantity based on customer groups, check Meetanshi's Magento 2 Limit Cart Quantity extension! The Magento 2 Limit Cart Quantity allows admin to restrict the total number of items allowed in a cart based on customers groups. Manage the stock of products in the store with the module. Set restrictions based on customer groups to incur maximum profit with minimum efforts.