In qTest Sessions, you can execute a Planned session with Web Explorer Edition in 2 ways:
1. From qTest Sessions home page, click on the icon on a Planned session and select Run Web Explorer from the popup menu
2. Go to editing session page of a Planned session and click on Run Web Explorer button
If you have installed qTest Web Explorer Edition, the Web Explorer's start session dialog will be shown. You can enter additional information then click on Start Session button to execute the session.