Before assigning your device, you need to register it. For more information, see Device Registration.
Navigate to the Devices folder of your project, for example
Every time the first device is added to a new Screens project, a user group is created.
For instance, if the project node name is we-retail, then the user group name is screens-we-retail-devices.
This group will be added as a member of the Contributors group, as shown in the figure below:
Once you are familiar with assigning channel to a display, see the following resources: