CES University of Toronto documents

[kasiakucia]

Hi All! I am about to send my credentials to CES. They need copies from my university. As my University never done it before, I am wondering what kind of copies of credentials does CES need? Does it have to be my diploma and diploma supplement with University stamp, date and saying it's a copy? My university says I would have to go through Notary public to certify copies... I don't know if I need to go that far since I am sending documents stamped and in sealed envelope... thanks for help!