Found the solution…
Hats off to @brentsum’s course on setting up a calendar booking app.
Following the instructions there I was able to get the OAuth settings I was looking for to learn how to use the API connector and get it synced up to google drive. The image below is more of a reference, but if you are stuck like I was, I would recommend Brent’s course (here)
API Name: [WHATEVER YOU WANT]
Authentication: OAuth2 User-Agent Flow
App ID & Dev. App ID: [UNIQUE TO YOUR APP]
App Secret & Dev. App Secret: [UNIQUE TO YOUR APP]
Scope: [UNIQUE TO WHICH GOOGLE API YOU ARE USING - EG: https://www.googleapis.com/auth/drive
Authentication Goes in the Header: Yes
Header Key: Authorization: Bearer
Add access_type=offilne (Google APIs): Yes
Login dialog redirect: Sign in - Google Accounts
Access token endpoint: https://accounts.google.com/o/oauth2/token
User profile endpoint: [UNIQUE TO WHICH GOOGLE API YOU ARE USING EG: https://www.googleapis.com/drive/v2/files]
Then to test you can set a workflow on a button to: Signup/Login with a Social Network, and then select the new API that you just setup.
NOTE: There may be some errors or a better way to do this, so please feel free to make amendments. I am extremely new here, and hopefully this little guide will help someone save the hours that I spent trying to track down info on api connector and google api oauth documentation yesterday 