In ProductCart v4, you have three options:

1. Show shipping address only if order requires shipping
2. Disable shipping address (billing address = shipping address)
3. Always show shipping address (even if the order does not require shipping)

In ProductCart v3.x this was a single setting: Allow customers to ship orders to an address other than the billing address.

This feature allows you to decide whether to allow a customer to provide a separate shipping address for the order. If you don’t check this option, customers will only be allowed to enter one address, which is the billing address. Therefore, any shipments will have to be made to the same address. Otherwise, customers will be able to enter a separate shipping address on the login/registration page (pc/login.asp). A check box allows them to quickly copy the billing address entries to the corresponding shipping address fields.

When separate shipping addresses are added to the system, ProductCart saves them in a customer’s account. Customers can manage (edit/add/remove) these alternative shipping addresses by logging into their account. When repeat customers checkout by logging into their existing account, they can easily select a shipping address from their address book.