Enable lightbox navigation arrows

To enable the navigation arrows for images inside the lightbox window please follow these steps:

-  Go to Settings -> Media
-  Make sure you enable images for Fancybox (first setting)
-  Scroll a bit down to the 'Gallery' section
-  Switch 'Autogallery' to 'All in one Gallery'
-  Check the box 'Show the gallery navigation arrows'
-  Save the settings