Now in public preview: Dynamic View

Is there a way to toggle back and forth from the participant view to the shared screen view.  The new Dynamic View features are great but I can't seem to toggle back and forth anymore.  When we co-facilitate a meeting between members of our team, it was nice to be able to keep an eye on participants while a colleague was sharing their screen.  Am I missing how to do this?  If this capability has gone away, could we get it back?  Thanks!