The Blog Module is a premium feature made only available with the Olympus PRO plugin. To use this premium feature and enhance the Olympus theme, you must purchase the Olympus PRO plugin and have the theme previously installed and activated on the website.
By default, Olympus PRO has all modules disabled, requiring you that after installing and activating the Olympus PRO plugin, go to Appearance > Olympus and toggle to Enable Blog Module.
After enabling the Blog Module, either using Appearance > Customize, or going to the frontend of your website and clicking on the Admin Bar where it reads Customize, it will load the Customizer.
Once the Customizer loads, go to the Blog section and click to open. Once it opens, you will see the option to customize the Blog Archive and Single Post.
When you click to open one of the sections, a new set of features will show enabled on the Blog > Blog Archive and the Single Post sections.