In my case, although my college and university is different for Bachelor study, I can take photocopies of transcripts and degree certificates along with original to the central university exam controlled office and ask officers to attested them. Even officer sealed them with university stamp, if I provide them an envelope. There is no multiple copy of original/official transcripts and degree certificate.
But for my Master degree university, official transcripts are provided multiple time with sealed envelope and sent to preferred address. The Degree certificate is one time issue. So, it has to be notarized.
I don't how it works in other university.