User Guide for the VC400 Video Conferencing System90The icon appears on the selected video images.5. Do one of the following:- Press or to scroll to Complete, and then press to authorizes theselected members to speak.When two conference members are authorized, the authorized video imagesare shown in big sizes, and other video images are shown in small sizes.When more than two conference members are authorized, the authorizedvideo images are shown in same sizes.All the other members are muted and the mute icon appears on theirvideo images.