The Video menu allows you to transmit video from your web cam to other participants in the session.
To begin, as moderator, you need to make sure video has been enabled.
The next step is to decide how many simultaneous cameras will be allowed to transmit at the same time. To change from the default of one you need to change the setting from the Tools --> Video menu and selecting Maximum Simultaneous Cameras.
You will then be presented with a slider allowing you to choose from one all the way up to 6.
To show or hide the actual video window click on the Show the Video Window icon.
The Video Window will allow you to change the size of the video window, take a snapshot for the Whiteboard, Choose the desired web cam, change the quality of the video being transmitted and received, and actually transmit video from your camera.