FanPilot

Hi, I want to set up user zones. What I mean by that is... Certain numbers have access all areas and can have incoming calls from any zone. Other numbers can only call numbers within their own zone or the all area numbers. As an example... extensions starting with 1 can call any extension in the system. extensions starting with 2 can only call other extensions starting 2 or 1. extensions starting with 3 can only call other extensions starting 3 or 1. extensions with 4 can call extensions start 4, 2 or 1. So, some extensions can have a little more priority than others. Anybody??? Thanks.