According to the installation instructions presented on the official website of the developers, after it's installed, you can launch GearSync from the desktop then the system tray needs to be check for the icon.
Here is the page with all the instructions: http://www.humanagear.com/download/windows
Note: At the bottom of the website, you will see the in the last picture the way GearSync icon looks.
Note #2: If you can't access the website, use a PHP web proxy. Access the following link, paste the Humana address and then it will load: http://webproxy.to/