This theme allows you to choose between full, left/right or grid style entries. By default the theme will display entries in the “full” style (1 column) but you can log into your WP dashboard and go to Appearance > Customize > General Theme Settings > Entries to select your preferred style.
When you select an entry style it is applied to all entries (homepage, tags, categories, search, archives…etc). That said the theme has built-in filters if you want to modify the entry style conditionally (for example have a different layout for the homepage only). You can view a sample snippet here.