A video conferencing system wherein a director controller is adapted for disposition on a lecture podium. The controller includes an interconnected control section and a video display section for controlling the distribution of generated audio and video information signals among a local and remote sites selectively in accordance with command signals fed to the controller by a podium speaker. The system is adapted to operate in one of two operating modes: a "Main-screen" mode and a "Mark-up" mode. In the "Main-screen" mode, the video display section is made up of two display areas; a "presentation" display area, and a "preview" display area. The "presentation" display area displays the video information which typically is currently being viewed by the audience/participants at the remote and local sites. The "preview" video display area is privately viewable by the podium speaker, displays video information signals from a second podium speaker selected one of the video sources. In the "Mark-up" mode, the "preview" area is removed and the size of the "presentation" area is increased. The image in the enlarged "presentation" area is adapted for editing/annotation by the podium speaker. The edited/annotated image is distributed to the local and remote sites.