Absolutely! Any document can be added (either manually, or automatically with a Workflow) to the Bride’s WedQuarters. This is to ensure the bride has everything in one place, rather than searching emails and spam folders for documents.
To manually add simply head to the Bride Card, select the document tab and choose 'upload document' from the dropdown.
To automatically add documents, create an 'add document' workflow, see the tutorial here: Workflow