Advanced route handling
You add another default sender, but on service level, which is only used for that service. For adding senders, please refer to Address book.
Advanced route handling should be used if you, for example, have a warehouse in another country from where you ship goods using a bulk service.
When setting up your delivery checkout and has selected a service for this purpose, select the sender from the list in the Default sender field.
Please refer to Create a delivery checkout.