Post settings – from this page you can set different options related to pages,  single blog post page,  single gallery page and single video page.  You can see available options in the image below.

You must take into account that some on these settings may be overwritten by the individual posts settings. For example you can disable similar posts or post meta only for a single blog post like that:

And even if from Post settings,  Similar Posts are ON, the single post settings will have priority.