User has some purchase order items that are not billed to the client. So the user wants the vendor to deliver the items to the company's address rather than the client or project address. How to customize the shipping address for the POs?
When you create a purchase order, Core asks you to specify the shipping address in the Create Purchase Order dialog. You can choose the option Custom Address rather than the client or project address in the Ship To drop-down and then specify the address you want to use in the detailed view (Add Purchase Order > General) by clicking on Edit Address. Check the Core Help for details.