I'm having some trouble integrating Google Docs, specifically sheets, and there is not a lot of documentation.

I've used the link under General Settings to generate an authorization code, pasted and saved the form, but am not able to attach docs from my Drive. Do I perhaps need to also use OAuth login or is this unrelated?

I'm using the SaaS v10.0  in this case, but also use Community v10.0 & 11.0