If you can't see it, pull down your notification panel with two fingers and swipe the screen left, if you still can't see the option tap the + symbol and you can add those extra options to the notification panel too.
@CandiceB: Further to the post by @Blessed4life please swipe from the top of the screen to the bottom, then again to enlarge the Quick Panel, and look for a grey padlock with the word 'Portrait' or 'Landscape' written below. If you tap on the padlock, then this will enable Auto Rotate once again. You can also tap on the word Portrait or Landscape to access the settings, and toggle off the Manual Rotation button, then tap Done at the bottom of the screen to remove the button from your navigation bar.
Thank you for responding. That is no longer there. It used to be there, but disappeared. Can't swipe left or right on that page. Even when I do a search on settings for portrait or landscape, it doesn't come up. Only Screen Mode. Nothing under screen mode for Portrait or landscape. That toggle button has vanished.
