CPS is the 2nd Largest Google Apps for Education (GAFE) organization in the world, just behind Australia. Each School has 3 OU’s per site and additional OUs cannot be created. This is what you get; use them wisely. We put Chromebooks under the school; in the case below, that would be "Albany-6290". You can move them into the groups you see listed, and you don't have to use those groups for a reason associated with the label. For example, some people put lost Chromebooks under "NonEmployees", and then lock that group down in the Console.