To start go to https://code.google.com/apis/console/ and login with your Google account details. Then follow the steps below.
Copy and paste the URLs as shown below
Redirect URI:
https://www.ashop.com.au/Handlers/GoogleConsent.aspx
Authorized JavaScript Origins:
https://www.ashop.com.au
and add them into the relevant areas shown in the image below
OAuth Content Screen
Replace the example URL with your site URL in this image:
