Several of our departments designate 1 person (usually a receptionist) to build a master list of fast dials. We create a service called "XYZ Directory" and add it to all of the phones in that department as a subscribed service. The problem is that everyone can make changes to this directory from his/her phone. Is there a way to lock down the service, or assign permissions so that changes can be made only from the receptionist's phone/account? Department staff come and go, so it would be preferable to build a service and only allow one account/phone to edit it, rather than putting everyone else in a restricted group. Thanks!