To assign an extension to the user, perform one of the following actions:

• Assign an available extension to the user, select the Use Existing Extension check box, and select an unassigned extension from the drop-down box.

• Or assign an available module-port to the user from the Module-Port drop-down box, and type the new extension. The module-port combination is valid only when you associate a digital or an analog extension type to the user.

To assign an extension to a user with other set types, perform one of the following actions:

• Type an appropriate extension.

• Select the Use Existing Extension check box to choose an existing extension.

• Select an unassigned extension from the drop-down field.