In order to run scheduled refreshes using the Tableau Server, you first need to whitelist the connector.
After whitelisting the connector, open the Connector in Tableau and submit your query.
We went for a basic query in Google Analytics.
In Tableau, update your query.
View your data in a worksheet.
Log in to your Tableau server.
Click 'Publish Workbook.'
Name your extract and embed your password.
Publish the workbook. This will prompt the Tableau Server to open.
Click 'Schedule a Refresh.'
Open the refresh options and choose one of the available schedules.
Now your scheduled refresh will run as selected.
To view your scheduled refreshes, go to 'Tasks' in the upper menu bar.