How can I import functionality from a template to another one ?

Hello, I actually work on my personal website and I wanted to know if it was possible to import some functionality from "Rally" template. I especially look for the search bar, the social link navigation and also for my main page the index from Rally with the section manager. Is it possible? If yes what's the point to focus and not forget for the import.

I work on the Lange template.

Hi. Impossible.