Admin Options - Local Extension Settings
Local Extension settings Change Password Run Setup Wizard

 Local Extension Settings: 
Local Extensions are  
Fist Extension Number :
Allow analog phones to be assigned to multiple extensions
Allow extensions to be AlphaNumeric (SIP/IAX users)

 Default Settings for a New User: 
Is Agent Voicemail
In Directory CTI
SIP IAX
Call Waiting 3-Way Calling
  VoiceMail Password