To see the Access Key and Secret key as you type them, check the Show Secret Key checkbox.
For Tenable.sc only:
IP/Hostname: IP address or host name for the Tenable data source.
Select Save.
Add New Datasource page for Tenable.
The Add New Datasource page is the same for both Tenable.io and Tenable.sc, with this exception: Tenable.io doesn't include the IP/Hostname and Collector settings. The Collector setting is covered in Deploy a Site Collector (Tenable.sc only).