The type of an organization group can have an impact on what settings an admin can configure. Customer
For more information about the different types of Organization Groups (e.g. Global, Partner, Customer, Container, etc.), refer to the following VMware AirWatch Knowledge Base article: https://support.air-watch.com/articles/115001662908.
Adding Devices at Global
The Global organization group (OG) is designed to house Customer and other types of OGs. Given the way inheritance works, if you add devices to Global and configure Global with settings intended to affect those devices, you are also affecting all the Customer OGs underneath. This undermines the benefits of multitenancy and inheritance.
For more information, see Reasons You Should Not Enroll Devices in Global.