Here's a link to the setup video: https://www.melangers.com/pages/quick-start-guide (it's the video numbered 3 on the page).
It begins with replacing the spindle in the middle of the bowl with a longer one. Again, after much puzzling, I determined that the machine no longer ships with the short spindle, so no replacing is necessary.
Below is the part not accounted for. I think it fits directly under the lid. The lid is another issue: does it have to be in place at all times? I don't think so since there are lots of occasions when one is adding ingredients as the melanger does its work.
