Are you refering to displaying the AF point on playback? If so it is under menu, 3rd tab, scroll down till you see “AF point Display”. Enable that and then you should see where the camera was focusing on your images.
If you go into the menu and select the menu item that looks like a box with an arrow in it.
Select submenu #3
select 'AF Point Display' and 'Enable'.
The LCD playback will then show the AF point(s) that had focus.