Mailing invoices

We have a customer that needs their invoices to be mail to a different location other than the main location where they are located at. They want the invoice to show the address of the main location as well as the location of delivery (mail to) location. Is it possible to set this up?

Edit the particular customer in the Customers tab. Just add more lines in the address box. A scroll bar appears as text exceeds the size of the input box:

When a new sales invoice is created, the full text in the address box appears:

Note: this does not retroactively change any existing sales invoice. It only affects new ones.