Related posts – how to disable

Hi, I have Focus 1.0.8. I tried to follow this guide to disable “related posts” in the single posts view. But the recommendation to go to:
Theme Options > Blog > Single – Related Posts > Off
doesn’t work for me, as I don’t see that option at all under blog posts… if I go to customize theme (PS I made focus in to a child theme) and look under “blog settings”, I see only two settings- “select category” and “number of posts per page”.Are there any options missing here due to some problem with my focus installation? if not, where is this “Theme Options > Blog > Single – Related Posts > Off” supposed to be? I also looked under Settings > reading. Thanks