To set up a minimum order quantity for a product:
  1. In the administration panel, go to Products > Products.
  2. Click on the name of the desired product.
  3. Enter the desired number in the Minimum order quantity input field.


  4. Click the Save button.
    NOTE: After that a customer will not be  able to buy the quantity of this product items which will be less than  the number set up for the Minimum order quantity option.