From Cake's perspective, a panel can be many things. A panel can be an interview, it can be a presentation, it can be a back-and-forth discussion between experts, and so on. As you know we're also working hard on a feature that will allow panels to accept moderated questions from readers. There are so many possibilities! But they're all panels.
Hmm, I’ve always thought of a panel as a group of people; and the Merriam-Webster dictionary feels similarly.
That may be why some people are feeling the need to name each type of “format”. I suppose Panel interview format or Panel workshop format would be more accurate to use. Is that correct?
As an experiment, I just tried and was able to create a panel with only one person in the panel.
Would that be called a Panel solo format?