I'm pretty sure that you can add credits at the end. As far as submitting your animations, under section 8.6.1.2. of the Awards pdf file, it says "All entries must be posted on Autodesk Streamline not later than 8:00 AM (PST) on February 23, 2004. Post entry to:
https://projectpoint.buzzsaw.com/client/FIRST. Log In Information: User Name: (public) no password." Hopefully that helps to answer your question.