Guides
Short answers to the questions people ask before a talk or a class.
How to show only one window on a projector from a Mac
Mirroring copies your whole screen and extended mode shows everything you drag over. Here is how to put just one window on a projector or TV from a Mac.
How to show only one window on a second screen in Windows
Win+P can only duplicate or extend your screen. Here is how to show one app window on a projector, TV or second monitor in Windows 10 and 11.
How to stop HDMI showing your whole laptop screen
Plugging in a projector can put your whole laptop screen on the wall before you're ready. Here is how to keep it private on Mac and Windows.
How to freeze the projector screen while you keep working
Freeze what the audience sees, then type a password or look something up on your laptop. Projector remotes, slideshow keys and Stagemark compared.
How to put windows back when you plug in a monitor
Windows pile up on the laptop screen after you unplug a monitor. Here is how to remember window positions per monitor setup on Mac and Windows.
Stagemark user guide: menus, shortcuts and settings
How to use Stagemark on a Mac: permissions, picking windows, plugging in a monitor, freeze and black screen, arranging windows and the license key.