To change the display modes, click the "Display modes" button in the upper right corner of the meeting room.

In the menu, select one of the display modes.
 
 
Fill the whole area - in this mode, the video is extended to the full width of the screen.
 
Fit on the larger side - in this mode, the video is the completely bigger side with its proportions saved.
 
Active speaker - is the mode, the active participant is displayed on the home screen. Up to 5 thumbnails from the videos of the most active participants are displayed on the right. The active participant is the participant who is currently speaking.
 
Tile grid - up to 20 thumbnails of participants' videos are displayed, the list is dynamically changed and the most active participants are displayed. 
The active participant is a participant who is currently speaking.
 
Fullscreen - the conference room is full screen.

A short video tutorial: