Click Applications on the left side of the screen.
Open the Install tab. Click Install next to WebsharePro's entry.
In the Manage tab, click next to WebsharePro's entry to launch it.
Troubleshooting Activation
Mac OSX: If you have a problem activating TonidoPro, make sure to stop Tonido, move the Tonido app outside "Applications" and to your Desktop. Restart it, do the activation and then move it back into "Applications".