You could use the Delegation of Control Wizard and administer the permissions for a user or group accordingly.
- Open the Active Directory Users and Computers console
- Right-click your intended OU and click on Delegate Control, then Next
- On the Users or Groups page, click the Add button
- In Select Users, Computers or Groups, enter the user's or group's name, verify the name with the Check Names button, then click Next
- Verify that the desired user or group is within the list on the Users or Groups page then click Next
- On the Tasks to Delegate page, select the desired permissions for the user/group, click Next when finished
- Verify then click Finish
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