You'll have to log directly into the modem to do that using your web browser. If you have the Panoramic modem, enter "192.168.0.1" into the address line and press "Enter". You will then be presented with the modem log-in screen. The Username is "admin" and the Password is "password". You will then have full configuration access to the modem.
For a different modem the process is the same but the IP address and default Username/Password may differ. Google them.
Thank you for contacting us via Cox Forums. If you’re having difficulty managing your Network Settings, we can help. Please email our team at email@example.com with this post, your full name, and complete address.