You can control certain aspects of your website's page template through a subsection of your top level folder called "Section Customizations."
The Section Customizations folder is a recursive page template, and helps users to customize certain repeated aspects of their websites.
Some content types only display on your page if/when they are added to the Section Customizations folder, including:
Additionally, if there is an important yet supplemental Zone B or C content item that you wish to appear on every subpage without having to mirror it tens or hundreds of times, you may be able to add it to the Section Customizations folder.
A few important caveats:
You probably already have a Section Customizations folder set up for you.
If you do not have one and you wish to customize your pages' section banner, contact information in the footer, or add a piece of content to every subpage in your branch without mirroring it, you can create a new Section Customizations folder: