Create other pages
All of the Content Template Catalog page templates specify the page parameter "ibm.portal.instantiation.content.dynamic.copy.target.selection" as true. This means the page template instantiation code will copy the content associated with the page template into the site area that is mapped to the existing parent page.
Keep these things in mind when creating pages:
The parent page must be associated with content for the template instantiation code to run. The content is not copied if the page is not associated with content. For example, if we create a page using the Basic page template that does not have any associated content, and then create a page under the Basic page using the Content Template Catalog page templates, the content associated with the page templates will not be copied, and the pages will not function correctly.
The new child page is mapped to the newly created area for you. All the portlet references are re-routed to the copied content.
The new site area name is the same as the friendly URL name entered for the page. This site area name is displayed in the breadcrumbs and in sitemaps. Therefore IBM recommends that your page names and site area names should be kept the same so the breadcrumb displays correctly. For example, if you rename, move or delete a page, we should rename, move or delete the associated site area.
Parent Get started with Content Template Catalog for site authors