| Using the Yealink VC Cloud Management Service Platform | 55Blocking or Unblocking Audio on CTP20The moderator/teacher can block/unblock audio of any participant to control whether the participant can hear thevoice in the meeting.Procedure1. In the Conference Control page, tap Participant.2. Tap after the desired participant, select Block Audio/Unblock Audio.Disabling or Enabling the Camera on CTP20The moderator/teacher can enable or disable the participant's camera to control whether other participants can see thevideo of the participant.Procedure1. In the Conference Control page, tap Participant.2. Tap / after the desired participant to disable/enable the camera.Controlling Cameras by CTP20The moderator/teacher can control the camera of the participants, including: moving up and down, moving left andright, and zooming in/out.Before you beginMake sure that the participant's camera to be controlled is not turned off and the Far Control Near Camera feature isenabled.Procedure1. In the Conference Control page, tap Participant.2. Tap after the desired participant, select Camera Control.3. Tap the navigation keys to adjust the camera angle.4. Tap or to adjust the focal length.Related tasksDisabling or Enabling the Camera on CTP20Allowing the Remote System to Control Your Camera
