How to connect cartridge module to mezzanine cms?

Question

Django

So, there is a site with mezzanine cms. It was necessary to tie a payment system with goods to it. Installed cartridge according to documentation at cartridge.jupo.org/. As a result, the functionality of the module works in the admin panel, but how can I link my html template to it? It turns out only on the standard bootstrap ... Immediately make a reservation, I'm new to the web and programming. It would be great if someone wrote a small tutorial. Thank you.