Adjusting reticle in the 110?

[White Owl]

Ok, maybe I'm just being blind and missing the obvious...

I just started messing around with the 110. Up till now I've just flown the Hurricane and Spitfire, and in both of those planes I use the clickable cockpit to adjust the reticle. Problem is, I'm not finding the clickable options in the 110's cockpit. I thought to assign reticle settings to keys instead... but I don't find the commands in the keybindings section.

What am I missing here? How do I adjust this thing?