By using the camera and microphone feature a presenter and one attendee can communicate via two-way video. The host can rotate the camera among all attendees. Please follow these steps to use two-way video -
1) Log on to the Dimdim web meeting portal (http://webmeeting.dimdim.com ).
2) Click on Preferences.
3) Go to Features tab.
4) Select camera and microphone feature from Audio & Video drop down.
5) Click on Apply and save.
6) Start the meeting.