You will have the option to mute/unmute them individually. You will also see additional options by clicking "more."
Chat: send a direct chat message
Ask to start video: The participant will be prompted with a message asking them to turn on their camera.
Make Host: Transfer host privileges to that participant. This includes polls, breakout groups, recording, and muting/unmuting others.
Make Co-host: Enable participant to record, send polls, share screen and manage other participants.