Changing Content Layouts Using the Customizer
1. From your WordPress Dashboard navigate to Appearance > Customize
2. In the left sidebar select Content Layouts
3. Here you can select which layout you would like for all of the sections of your website. The screenshot below shows a few of them. Select whichever layout you would like for each section
4. When you are finished click on Save & Publish in the top-right corner of the sidebar
Changing Content Layouts Using the Theme Options
1. From your WordPress Dashboard navigate to Appearance > Theme Options
2. In the top menu select the Layout tab
3. Here you can select which layout you would like for all of the sections of your website. The screenshot below shows a few of them. Select whichever layout you would like for each section
4. When you are finished click on Save Options in the bottom-left corner of the page