Hello there,
Have you created an OU?
It is recommended to designate a specific OU to hold all subordinate AD Bridge joined systems and that delegation is granted over this OU. This is the preferred method since scoping the location for an account to create computer objects in the domain is more secure.
You can use organizational units (OUs) to delegate the administration of objects, such as users or computers, within the OU to a designated individual or group. To delegate administration by using an OU, place the individual or group to which you are delegating administrative rights into a group, place the set of objects to be controlled into an OU, and then delegate administrative tasks for the OU to that group.
You can dig deeper here https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/delegating-administration-by-using-ou-objects
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