We hold a number of meetings with a large audience where it is necessary to force mute the attendees. We, therefore, set our guest speakers as cohosts so that they can control their own mute button. However, many times, they end the call for all since a cohost has this ability. We need a way to disable this ability for some cohosts or create a new "speaker" role where they have the ability to mute/unmute themselves but not have other cost controls. Better yet, make the available host functions selectable for this role.