| Skype for Business Conferences | 36Muting or Unmuting Individual Conference ParticipantsThe organizer and presenters can mute or unmute individual conference participants.Procedure1. During a Skype for Business conference, select Participants.2. To forbid the participant from speaking, tap next to the participant.3. To unmute the participant, tap next to the participant.The muted participants press the mute key to unmute.Demoting or Promoting Conference ParticipantsThe organizer and presenters can promote conference participants from attendees to presenters or demote conferenceparticipants from presenters to attendees.Procedure1. During a Skype for Business conference, tap Participants.2. Do one of the following:• Tap to demote a presenter to an attendee.• Tap to promote an attendee to a presenter.Enabling or Disabling Conference AnnouncementsOnly the organizer and presenters can enable or disable the announcement. When the announcement feature isenabled, the phone will issue a voice message to announce that a participant joins or leaves the conference.ProcedureDo one of the following:• Navigate to More > E.Anc to enable announcements.• Navigate to More > U.Anc to disable announcement.Locking or Unlocking a Conference CallThe organizer and presenters can lock a conference call to prevent other people from joining the conference callwithout approval. When the conference is locked, contacts must wait for the organizer or presenters to admit them tothe meeting.Procedure1. During a Skype for Business conference, tap More > ConfLock.An icon (the number indicates the participants waiting in the lobby) appears on the screen.2. When you're ready to enable people to join the conference, navigate to More > ConfUnLock.
