You use the Edit Data Source pane to enable authentication for a data source. After authentication is enabled, you select an authentication scheme and credentials.
To enable authentication, follow these steps.
In the Edit Data Source form, expand Enable Authentication, Caching, Proxy, Insecure Access.
Set the Authentication slider to On.
Select a predefined authentication scheme by setting the respective slider to On.
From the Credentials dropdown list, select a predefined authentication credentials.
Click Preview Data Source (optional).
Click Save Data Source.