Are you connected to the voicemail with a cable and are able to log in and see the active port screen?

If you are that's where you call a helpful admin or Mod give them a few bucks for their time and training and let them show you how to program it the way you are looking to do so the next time you can do it without support.

The mission of this board has always been help the OP with all of the user level questions. Sometimes folks go a little over board with their support and that's fine also.