Chronofesh is used for shipping when ANY product in the cart has a property of Chronofresh. (ref: chronofresh)
If a product does have a "chronofresh" property, ALL products will be sent by Chronofresh and the cost of shipping will be calculated for Chronofresh only.
Therefore a property with a reference of "chronofresh" must be setup in the system and attached to products, if chronofresh is to be used.
If international postage is required, then the best price for international shipping will be selected as the shipping price.
If no products have the "chronofresh" property, then the best price for standard Chronopost will be selected as the shipping price.
If shipping is not available, then an error message will be displayed to the client on the cart summary page and the "Payment" button will be hidden.