This user right determines which accounts can be used by processes to create a directory object using the object manager.
This user right is used internally by the operating system and is useful to kernel-mode components that extend the object namespace. Because components that are running in kernel mode already have this user right assigned to them, it is not necessary to specifically assign it.
Computer Configuration\Windows Settings\Local Policies\User Rights Assignment
At least Windows XP SP2, Windows Server 2003
User Rights security settings are not registry keys