Ofcourse you can upload information/consent form to the survey, otherwise all surveys would be blank. What do you mean?
If you are looking for something like an authenticator/e-signing, then you'll need to use external JS libraries.

I have a template that needs to be attached from my university. Can I input that exact document?

Maybe I'm missing something, but why do you think you can't?

I am in the survey area adding questions just fine, but I want to upload the informed consent from my university to the survey at the beginning. Can I upload the exact template to the survey?