The layout from the following image of the homepage in the demo was created using the free Unyson plugin, which included a Page Builder extension.
Note: Unyson was removed from WordPress.org and is no longer maintained. These instructions are kept for existing sites that still run it; on a new site, build your layouts with the WordPress block editor instead.
Balance includes several Page Templates which you can use to create different page layouts. The layout for Homepage and About pages from the demo can be easily imported on your site after installing the Page Builder extension.