Administrative templates can be used to control the environment of an operating system(OS) and the user experience. Two available sets of administrative templates are computer-related settings and user-related settings. Administrative template files offer most of the available GPO settings, which change particular registry keys.
References:
https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-
2012/dn789186(v=ws.11)
https://docs.microsoft.com/en-us/learn/modules/implement-group-policy-objects/7-define- administrative-templates?