NEC Univerge SV8100 Installation Manual page 66

For the Hierarchal user structure to work correctly, the users must be assigned to extensions. To
assign a user to an extension, go to configure / telephone system and edit an extension.
Click edit against the extension you wish to assign to a user
Click the select button to choose a user. You can begin to type in the user name to lookup and
names stored in the MyCalls database. Select the user and click OK.