In the middle of the screen from the left side to the right side:o Mute or unmute the microphoneo Disable or enable the camerao Disconnect from the conference roomo Start or stop presenting (share your screen or a program)o Start or stop sharing image or pdf (presenting) At the right side of the screen from left to right:o Volume up/down or change speaker settingso Change camera and/or microphone settingso See call statisticso Go to full screen mode/Exit full screen modeYou have some extra options (eg. to lock conference room when everybody has joined or to mute/unmute everyone during the meeting) if you click on the three stripes on the left upper corner of your screen, next to the name of the conference room: