[1] – [5]: Some elements / information for your single product
[6] Single Product Sidebar Position: You can select Right / Left sidebar or full page (without sidebar). And when you select Right / Left sidebar, you are able to choose sidebar in [7]
[7] Sidebar Used For Single Product: There are some availabe Sidebars that you can choose. And to design these sidebars, please negative to Appearance > Widgets
Here you can see the complete widgets when you choose Sidebar in [7] is Product Widgets Area
[8] You can set for product image thumbnails to display as Horizontal or Vertical style then set the number of images