Creating Subpages for Page Groups
A page and its subpages are called a page group. Create subpages to store information that is subordinate to information on a page.
You can collapse the subpages in a page group. After collapsing a page group, you can easily move or copy all the pages in the group with the Move or Copy command or by dragging.
Use these techniques to create subpages for a page group:
Create a new subpage: Open the gallery on the New Page button and choose New Subpage (or press Ctrl+Shift+Alt+N).
Turn a page into a subpage: Right-click the page’s tab and choose Make Subpage (or press Ctrl+Alt+]).
Turn a subpage into a page: Right-click the subpage’s tab and choose Promote Subpage (or press Ctrl+Alt+[).
On the page tabs, the names of subpages ...