HubSpot CMS Guide: How to change your page layout
Sometimes there's a website page that you would like to add a column to, or only use a single column. Here are instructions on how to change the page layout of individual pages on your site.
1. Go to Page Properties
Click on the orange Page Properties button at the top of the screen.
Select Show advanced options.
2. Choose the layout for this page
In the Layout drop-down menu, select the layout you would like to use for this page. Save your changes.
The page will then refresh with your new page layout.