How to Delegate Control to non Admin to add/remove "Direct Reports" in AD

I want to be able to grant rights to 2 people in the HR department to be able to modify the following fields (I am using the Delegate Control wizard):

General tab:

First name/Display name/Description/Office/Telephone number

Address tab:

Street/P.O. Box/City/State province/Zip Postal Code/Country region

Telephones tab:

Home/Pager/Mobile/Fax/IP phone/Notes

Organization tab:

Job Title/Department/Company/Manager/Direct Reports

note 1:  If I use .qds file (dsquery, OpenQueryWindow) on their desktop. Everything but the "Manager" and "Direct Reports" field is working.

note 2: If I use the mmc snap-in for Active Directory Users & Computers. Its too much access plus the "Direct Reports" still doesn't work.

How can I over this?

Tommy