First, open the PowerPoint file you want to present. Go to the "Slide Show" tab at the top and click "Set Up Slide Show". Choose "Browsed by an individual (window)" for the show type. Then, click "Play from Start" to open your slideshow in a new window.
Next, in the WebinarTV client, click the "Share" button and choose "App and Window". Find your PowerPoint slideshow and select it.
Resize the WebinarTV window to be smaller so you can still see your slideshow controls. Make the slideshow window big to fill most of the WebinarTV screen attendees see.
Now, you can advance through your slides in the slideshow window as usual. When you end or close the slideshow, sharing will automatically stop in WebinarTV.
The key is setting up the slideshow separately first, starting the slideshow, and then sharing just that window through WebinarTV while keeping the controls visible for yourself.
