I am currently trying to setup QuoteWerks to be able to print Labels the size of a shipping label that we can tag on items we received. Is there anywhere to do something like this?
Yes. Do you have a label printer?
If so, edit a template and set the printer (File > Printer Setup) to your label printer. This will then give you the sizes this printer can support.
Alternatively, just trial and error it so you get the size you need?