Guild of Writers

I'm in the tower in Ahnonay water age and only see two controls. The round control that turns off the current and the lever that opens the door. I have searched carefully and do not see the third control I have heard about that activates some mechanism. Am I missing something? I see the little round window with a dial mechanism on the right side and a circle of light on the left. Behind me is the open door.
Thanks
I'm new to MOUL so if this is in the wrong forum just tell me.

Indeed this is the wrong forum - you are talking about MOUL, right? In MOUL, there are only the two controls you describe. For that reason, playing Ahnonay on MOUL needs two players.
This forum is about the Offline KI and Drizzle, which extend your offline Uru game - called TPOTS for "The Path of the Shell" - with tons of new ages and features. However, to get that game, you need to buy the CDs somewhere (look for "Uru - Complete Chronicles" which contains all you need). That is a single-player game, but fans found a way to meet in there nonetheless, on so-called Shards. For example on the Deep Island.