With the theme you have also the choice on how to display the Single Post View (Article Page). With or without Related Post Widget.
Navigate to Appearance > Jouy Theme Options > Article View Settings
You can decide whether it should appear (check box), the title of it (you can name it whatever you feel), the number of related posts (you can decide between 1 and 4) and whether it should pull the related posts form categories or tags.
Pro Tipp: We recommend you to use categories instead of tags.