Unfortunatlly we do not provide extensive documentation on this. You can always use Google since K2 is very popular and of course this forum. I think that you can also can find some courses online regarding K2.

I have taken a couple courses online about K2 already and also have done google searches for hours. But, this relationship between the menu items and the categories seems to be a black hole that everybody has to figure out for themselves. And, it does not appear to work in a logical manner to me. But, I am sure that is not correct. It is such a shame this this very crucial feature is not better documented! Hopefully in the future somebody that understands it will find the time to create a document about Menus and Categories.

You can also try to experiment with K2. Just modify some category settings and see the results. The only difference in the menu is that if you are linking to multiple categories then the menu settings are active and override the category settings.

Thank you very much for this video :)