After unzipping the package, navigate to Divi > Theme Customiser

In the top left click on the portability icon and import the Day 16 - Customiser Settings.json file.

Next, navigate to Divi > Theme Options and in the top right, click on the portability icon and import the Day 16 - Theme Options.json file.

You will need to have your main menu set up in Appearance > Menus and you can add your own logo via Divi > Theme Options.