How do I use content the content_top region?

This may be a newbie question (though I've been using drupal for two years I'm still naiive in areas like themes), but how exactly can I use the content_top region for blocks?

I'm on 4.7.5, and am using the 2.0 version of your theme, with only slight modifications. Under admin -> blocks I only have right sidebar, left sidebar, content, header, and footer. When I select content, the block shows at the bottom of the content section (which is good in some circumstances). How would I get it to appear at the top of the content section?

BTW, this is the best publically available drupal theme I've ever seen, and I 've looked at pretty much all of them. I'll have to start customizing it though, cuz pretty soon everyone will be using it and we'll all look the same!