DEPRECATED legacy format (grants both audio and video)
Sample use case:
Have a custom participants panel in your integration and want moderators to be able to grant specific broadcast permissions to particular users, so they can turn on camera and/or microphone.
This is particularly useful in webinar scenarios where particular roles do not have broadcast permissions by default, and you want to give some participants the ability to speak (audio only) while others can both speak and be seen (audio and video).