Each Switcher Studio license is intended for a single user. A license will allow you to select one device as the main Switcher and use its built-in camera. In addition to this device, you can connect up to 8 other devices as sources. You only need to sign in on the device being used as the video main Switcher.
Note: You cannot be logged in on two devices at the same time, or give your login credentials to another person to use on their device. Multiple licenses are required when a user would like to use the video mixing interface on more than one device, or any device that is not owned by the user.