Dreamweaver automatically adds to the bottom of the Insert menu any files that are inside one of the subfolders in the Configuration/Objects folder.
To control the position of an object in the Insert menu or any other menu, or to add an object to multiple menus, you can modify the menus.xml file. In Dreamweaver 3, this file controls the entire menu structure for Dreamweaver. For more information about modifying the menus.xml file, see Chapter 16, "Customizing Dreamweaver" in Using Dreamweaver.
Note: In previous versions of Dreamweaver, the items in the Insert menu were controlled by a file called InsertMenu.htm. This file has been superseded by menus.xml.