Hello:
> ... covered on the owner manuals ...
Yes.
I have the same manual as the one I downloaded both here and on the web some time ago.
But I'd say (YMMV) that
covered is a bit of a stretch.
Maybe it's just
me, but I see a very ingenious albeit rather complex mechanism that needs a careful setup and quite a bit of adjusting to get it working properly.

Since it was an attachment that was sold separately, I'd expect that it came with a set of precise instructions on how to operate it.
But I have not been able to find anything on the web.
Best,
JHM