Making A Sticky Header

So. I’ve made a header in the patterns. the whole thing’s top item is a row/columns advanced. And I want to make it sticky so that when I scroll down it neatly disappears but when I scroll up it reappears where-ever I am on the page. All the helptopics say “just click the make sticky option” but that option seems to be missing . Can anyone tell me how I’m supposed to make my header sticky? I tried putting a “sticky” and a “Fixed” position on the top level row/columns but the actual header is set to absolute by default.