How do I forward a virtual number to an external number?

Objective

Forwarding a virtual number to an external number.

Go to the following location Phone System > Virtual and Toll-Free Numbers.
Edit the virtual number you wish to forward.
Assign the virtual number to an extension or auto attendant.

Go to the following location Phone System > View All Extensions.
Edit the extension with the virtual number assigned to it.
Under the Call Forwarding section, select Forward to External or Extension.
Enter the external number you wish to forward to.
Save changes.
Test to make sure that it is routing correctly.

Go to the following location Phone System > Auto Attendant.
Edit the auto attendant with the virtual number assigned to it.
Choose either the business, lunch, holiday or after hours sections for when you want to forward to the external number.
Select the Additional Options tab.
Change the option to Transfer to External Number.
Enter the external number you wish to forward to.
Save changes.
Test to make sure that it is routing correctly.