Lumen help
To forward all your incoming calls to a different number, you'll need to turn Call Forwarding Always on.
To turn Call Forwarding Always on:
If you no longer want to automatically forward your calls to another number, you can turn off the call forwarding always feature two ways: using the Services window or the icon on the toolbar.
To turn Call Forwarding Always off using the Service window:
To turn Call Forwarding Always off using the icon on the toolbar:
Learn more about Enterprise Assistant Toolbar