Can anyone explain to me how on earth to move through the setup pages with the ProntoNeo please?

I can never get past a first setup page. The manual suggests that there should be something resembling an UP/DOWN on the left of the screen to go to any next page but I cant see it! What am I doing wrong?

Or is there some way of getting to the date and time setting page?

In particular I am trying to activate a switch to turn subwoofer output on, but how to get there eludes me completely!