Making an attendee a presenter

Making an attendee a presenter

As the Meeting Organizer, I am not able to make someone else a Presenter. They can click the button to Start Sharing and then I can accept their request, but shouldn't there be a way for me to make someone in the Attendees list a Presenter? I believe that in the past you've mentioned hovering over the participant and clicking "Make Presenter" but I have no such button or option.

Thanks for your help,

Kevin