Once you have opened the Customize User Interface (CUI) Editor, you can view the contents of the loaded customization files by expanding the elements in the tree structure and viewing the properties of the elements by selecting them. Open the Customize User Interface Editor by clicking the Manage tab of the ribbon, Customization panel, and then User Interface (see Figure 1). Before you start customizing your own menus, toolbars, and workspaces, you should familiarize yourself with the customization environment.
The Customize User Interface (CUI) in AutoCADĀ® Architecture allows you to tailor your drawing environment to suit your needs. Back November 30th, 2011 Understanding the Customize User Interface (CUI)