Acl problem "no write access to parent"

Hi guys i need an acl like that

access to dn.subtree="ou=Company_People,dc=company,dc=com" attrs=cn,member by dn="uid=testadmin,ou=People,dc=company,dc=com" write by dn="uid=admin,ou=People,dc=company,dc=com" write by users read by * none

It works fine for me that uid=testadmin has only rights on two attributs cn,member under "ou=Company_People,dc=company,dc=com" But i need one more right to that uid=testadmin to create new cn (group) under this "ou=Company_People,dc=company,dc=com"

when i try to add new cn under "ou=Company_People,dc=company,dc=com" by using this uid=testadmin it gives me following error

ldapadd: Insufficient access (50) additional info: no write access to paren

Please help me regarding this matter

Thanks