ExchangeWP Add-Ons: Billing Address
The Billing Address add-on allows you to have your customers enter a billing address as well as a shipping address. There are no settings for this add-on.
With the Billing Address add-on enabled, the customer will have to add a billing address and have the option to "Ship to billing address."
To activate this add-on, go to ExchangeWP > Add-ons and click the Disabled button to the right of the Billing Address add-on.