1) Enter part of or the full last name of the user you wish to setup Do Not Disturb for.
2) Click Search.
1) Click "On" or "Off". When on, Do Not Disturb prevents your phone from ringing and callers are given busy treatment (such as being sent to Voice Messaging, if available, or forwarded to the specified number of the Call Forwarding Busy service, if available). The default for this service is "Off."
2) The Play Ring Reminder when a call is blocked check box causes the service to play a short ring burst if checked (500 milliseconds in duration).
3) Click OK to save changes.