On a brokerage's parent site, when creating a new content page, the page can be shared down to the brokerage's child sites (agent or office sites).
Step by Step
admin > website tab > new page or select already created page
1. Start by creating a page to be shared or select a page that has already been created.
2. On the New Page or Edit Page screen, select Shared with Child Sites under the CMS Content Advanced Settings section
How does this differ for agents?
Since this is a website page, this is available to the admin and broker level users.