Hi,
In order to find which view file to edit based on where you want to add or change something, you don't need to dig into the code.
I would recommend you follow
www.hikashop.com/support/documentation/1...-display.html#layout
and turn on temporarily the "display view files" setting of the HikaShop configuration. Then, look at that product page again, and you'll see which view file displays which area of the page. Then, you can go in the menu Display>Views, edit the corresponding view file and make your changes in there, which will be saved as a view override.