@steveinbuffalo Hi Steve, welcome to SavaPage !
There are basically two ways you can do this. For the first one, each user (patron) that needs to print must be known in SavaPage. Users can than login to the User Web App and upload their documents (pdf, txt, docx, …) or graphics (jpeg, png, bmp, …) and create a so called print job ticket. Tickets are handled by a Job Ticket Operator, i.e. a staff member at the reception who prints the document and collect the costs. See Job Tickets Web App .
In the second scenario users can just email the document to be printed as file attachment to a special purpose email address. They get a reply with a Mail Print Ticket number. A Mail Ticket Operator at the library can, at the request of the user, collect the document by ticket number and e-mail address, print the document and collect the costs. This scenario is currently in beta testing by a US public library and is not yet described in the user manual. It is an extension of the Mail Print scenario. You are welcome to join as beta tester. Send a message to firstname.lastname@example.org and I’ll help you on your way.