Zeitreise | Portfolio

Hallo Ihr Lieben,

I don’t seem to come to terms with the Portfolio section.
I’d like to create a presentation page to introduce the projects (like your “Project” page on the demo) and then, for each project, have a dedicated page with a gallery.
Can you help me understand how you set up the whole section?
Specifically, I’d like to know where the pages must be created (under “Pages”? Or “Portfolio”?) and which template has to be used.

Thanks in advance!