Polytomic connects to Google Sheets using OAuth.
In Polytomic, go to Connections → Add Connection → Google Sheets.
Click Connect to Google Sheets to go through Google's OAuth flow.
Choose your spreadsheet by clicking Browse.
Click Save to save this connection.
Changing the authenticated Google Sheets account
You can always re-authenticate into Google Sheets using a different account by clicking the Force reconnect button in the screenshot above.
Updated 10 months ago