PrestaShop 1.6.x. How to find out the names of the modules used on a page

1. In your PrestaShop admin panel go to Modules and Services -> Positions section: 
2.  Click Run Live Edit button: 
3. On the opened page you can see the modules names inside red borders: 
4. Once you see the module name you want to edit, go to Modules and Services -> Modules and Services and enter its name in the search field to find it. Click the Configure button to manage it: 

Hopefully, this tutorial was helpful for you.