http://wiki.freepbx.org/display/FPG/User+Control+Panel-Follow+Me
https://wiki.freepbx.org/display/FPG/Follow+Me+User+Guide
http://wiki.freepbx.org/display/FPG/Contact+Manager+Module
The FreePBX phone system has a User Control Panel where you can control various settings for your extension such as:
On FreePBX 12 and newer systems, your username and password are maintained separately and you should receive an e-mail message with your login details.
Please change your password by clicking on the 'Gear' icon in the lower left after logging in the first time.
https://pbx.yourdomain.tld/ucp
or by your PBX IP address
https://192.168.1.30/ucp
External numbers should be added to the FollowMe List in the following format:
1NXXNXXXXXX#
which is 1 + area code + number + #.