Magento for B2B Commerce, 2.2.x
Configuring Page Hierarchy

The configuration settings activate the page hierarchy system and metadata, and determine the default menu layoutThe visual and structural composition of a page..

CMS Page Hierarchy
CMSContent Management System: A software system that is used to create, edit, and maintain content on a website. Page Hierarchy

To configure page hierarchy:

1. On the sidebar, tap Stores. Then under Settings, choose Configuration.
2. In the panel on the left, under General, choose Content Management.
3. Expand the CMS Page Hierarchy section, and make any changes that are necessary.
4. When complete, tap Save Config.