You may find that the list of pages with your app gets quite cluttered with larger apps. To combat this you are able to add page groups to group related content pages.
To add a page group – click the Create a new page group button.
Then enter a name for the group when prompted.
You can now move pages between groups with the Change group button which appears next to the delete button when hovering over a page item.
To edit a page group, click on the title of the group. From here you can also delete the group if empty.