Under "controls" for whatever device you're using go to "cockpit camera", look for "cockpit view look (up, down, left etc...)", and assign it from there. You can do the same thing for the external view (under "external camera" and "external view look"), and they'll work fine despite the fact that the program will complain the command is already assigned to the other camera.
Glad you got it working.
I'm pretty unimpressed by the total lack of documentation for anything so far, which seems to include basically everything for the airplanes, so we're several steps backwards from the kneeboard function that was in FSX and FS2004.
That said, there's a ton of potential here compared to the engine that was running P3d and FSX, so it's pretty impressive overall, even with the rough edges
Under "controls" for whatever device you're using go to "cockpit camera", look for "cockpit view look (up, down, left etc...)", and assign it from there. You can do the same thing for the external view (under "external camera" and "external view look"), and they'll work fine despite the fact that the program will complain the command is already assigned to the other camera.