You can assign a default shared page to each container page you have. The user interface considers this page assignment when determining what to display.
Open a container page on the Maintain Container Pages panel.
In the page properties section, look for Default Shared Page and click.
The Choose a Default Shared Page dialog box displays in a new browser window:
If the shared page list is long, you can refine it by category or starting text to more easily find the desired page.
Select a shared page to use as the default for the container page or selectfor no default.
Clickto accept your selection and close the dialog.
Click(at the bottom of the page properties section).