How to Enable/Disable Featured Images on Post Page

To enable/disable the Featured Images to appear on Single Post Pages, navigate to Theme Options -> Blog Options -> Single Post Page -> Featured Image on Single Post Page -> and set this option to On or Off

Having this option enabled, will place the Featured Image set for the post to appear on top of the Post Content, depending on the Blog Post Design being used.

Setting the option to Off, will not show the Featured Images at all. The Featured Image will only be used as thumbnails on Archive pages.