Adding an Existing Page to a Menu
You can assign a page (i.e. content node) to a menu when creating a new page or editing an existing page. To add an existing page to a Menu, locate and click the 'My sites' link (in the workbench menu). Then click Add Link on the appropriate website.
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Click on the "cross icon" in front of your item and drag it to the spot where you want your menu item to reside. Push "Save" to save your change.
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Make menu expandable by default
Click the checkbox next to "Show as expanded"
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