On the left of the Repositories page, click the "Connect Google Drive Repository" button.
Google will ask you to log in with the account you wish to connect to ClassGather.
You may receive an alert from Google saying that ClassGather may be unsafe.
If you do, click "Advanced" to open a panel with extra options, and then click "Go to thrivist.com" to continue.
Google will confirm the permissions you are allowing for ClassGather.
Scroll down and click "Allow."
You will then be taken to the Create Repository page. Follow the steps to set up a Repository as normal.