Enable Scheduled Update to automatically download the most recent components at the scheduled times.
The link may show ON or OFF, depending on the current status of the update setting. If the link shows as ON, you have enabled scheduled updates. If the link shows as OFF, you have not enabled scheduled updates and will only get updates if you manually click the Update Now button.
After making changes, the link in the Overview tab should change, depending on whether the scheduled update option has been enabled or disabled.