Although default participant settings are determined by an org’s IT admin, the meeting organizer may want to change them for a specific meeting. The organizer can make these changes on the Meeting options web page.
Before a meeting begins or during a meeting, the organizer can use meeting options to set the Allow camera for attendees option from the default On to Off. Leaving the setting On means that it’s up to each attendee to decide if they want to enable their video feed. Setting it to Off means that attendees cannot enable their video feed. The setting does not affect meeting organizers or presenters, who always can use video.