You can use Plesk to check for updates, change themes and check the security of your WordPress sites all in one convenient place.
Scanning your server for WordPress installations
Before you can manage your WordPress sites, you first need to scan your server for WordPress installations. Plesk will then add these sites to an easy to manage section of the control panel.
Step (1)-Click on the WordPress icon from under the Server Management section of the left hand menu.
Step (20-Click the Scan icon from the toolbar under the WordPress Installations tab.
Step (3)-In the bottom right corner of the Plesk control panel a popup will appear showing the progress of the scan.