Yes – as I wrote, I followed the description on that page.
I made a page and it’s template is “Category page with intro”. Then I tried the different keys, one at a time, with the corresponding value, like so; https://postimg.org/image/b1rxt6e8h/
None of the key/value pairs work, at least not the way I expect. When I click on the correct category I would expect my page to be shown first, and then all the posts belonging to that category, but it does not.