Systems and methods for displaying a teleconference session are described. Teleconference data including display streams is transmitted to a number of client computers. Each of the streams may include at least a video and an audio component. A user interface includes a first display area rendering a first stream and a second display area rendering a second stream. An event may occur that removes a video component from the first stream. In response to the event, the rendering of the first stream may be removed from the first display area, and one or more streams of the plurality of streams may be displayed in at least a portion of the first display area. Such techniques for modifying user interface displays based on the actions of select users that have transitioned to an audio-only mode can optimize the use of a display area.