If you have update 0.2.18-r11-254 installed, you can now have up to 8 portals on your MAG254 device.
  1. Hit F1 within the Portals setup and turn “Multiportal mode” to on.
  2. Go to the “use portal” option and make sure your currently-active portals are set to on.
  3. Go to “Portal” and scroll to 3 or above (depending on the number of portals you are adding).
  4. Turn “Use portal (3)” to on, then scroll down and enter the portal name and URL.
  5. Then click OK to save.
  6. Hit the menu button when prompted to access your portals choices, when your MAG254 starts to load.

Enjoy.