To associate navigation links with an article, click on Page Settings.
Select a page.
Click Type.
To associate a page with an article, select Article>Save>enter article ID>Save.

To associate navigation links with a portlet and URLs, click on Page Settings.
Select a page.
Click Type.
To associate a page with an article, select Portlet and click Save.

To associate navigation links with an embedded URL, click on Page Settings.
Select a page.
Click Type.
To associate a page with an embedded URL, select Embedded.
Save.

Enter a URL.
To associate navigation links with a URL that will open in a new window, click on Page Settings.
Select a page.
Click Type.
To associate a page with a URL that will open in a new window, click URL.
Save.

Enter a URL.
Enter _blank in the Target field.
Save.