WPBakery Page Builder
Our theme uses WPBakery Page Builder plugin, that provides the composition of your page easy and handy.
Install and activate the plugin (Appearance > Install Plugins). Go to WPBakery Page Builder > Role manager and select for which content types Page Builder should be available during post creation/editing.
WordPress 5.x use Gutenberg as a default editor. We would recommend to disable the Gutenberg editor and use WPBakery page builder as the page editor because it’s more advanced.
Video tutorials you can find here.
We would recommend using Backend editor of the WPBakery Page Builder.