How to disable posts shown on homepage

I'm using a Catch Responsive theme for a site and I'd like to only use the option for featured content and a header on the homepage. Right now also the latest posts is shown underneath the featured content (or in this case the 404 error since there are no posts to be shown). How can I remove these posts from the homepage? I tried to select 'static page' (settings > reading) but I can only select one of the three childpages as the frontpage and if I do that, the featured content disappears from the homepage.