We are using Elementor Page Builder plugin so you can use its drag&drop user interface to create your page contents. Here are detailed documention about how to use Elementor from its official page.
You can also checkout full lists of getting started documentations from here.
Import Single Demo Pages
First please install and activate Elementor and Framed Theme Elements for Elementor plugins before you proceed.
Click to here to see full documentation about how to import single demo page.