We are a supplier, and while I agree with you that the packing slip should read the retailer info so that your customer can look to you for customer services, Shopify should be providing that packing slip as the packing slip within the order to print...

We receive orders from a 3rd party that come in with a specific tag. Is there a way to designate that tag to a specific location to ship from. TIA

If you buy a chromebook you’ll need to also buy a Bluetooth label printer because your typical dymo/usb shipping label printers DO  NOT work with a chromebook.