It used to be under User Settings along with User Defined DigitMaps, but I had been unable to find it recently. Now the only way for me to set it is to go through the web server on Obi110 itself, but every time I set it there and clicked Reboot, the device will reboot one more time and my new speed dial will disappear, apparently overwritten by the portal setting.
Is that only me or it happens to everybody?