Jed, (apology for length in getting back to you, definitely not proud of it), if you have joined from the Blue Jeans Browser, you can absolutely change the layout. There will be a slider bar at the bottom of your screen that allows you to change size between presentation and video. Right now, there is not currently the ability to adjust the size of the header and footers. If you press the "P" key, it will collapse your right-hand panel, giving you more video layout space. #StayTuned for changes in additional real estate!