To install the modules you have at first need to login your prestashop dashboard. After login in to your dashboard go to Modules -> Modules manager
In the module manage you will get a option upload module click these upload a module
After clicking that you have to drop the archive crazy mosule file.
After dropping the file it will show you a pop up installing module.
After that it will show you that module installed.
After completing all the above tasks you can see your crazy elements page builder on your dashboard.
And also you can check the module installation video.
