Bulk Sending

Hi

Is there a way that after each form is submitted and the PDF is generated that the PDFs can be held for a approval then released/sent in bulk?

For example we have classes and attendees get certificates upon completion of the class.
However they sign into the class at the beginning. We would like the ability for those to who sign in that the system goes ahead and generates the PDF based on the sign in but allows us to go into the system and send in bulk all the certificates for that class once the class is over.