Customize menu > Customize User Interface
The Customize User Interface dialog lets you create an entirely customized user interface, including shortcuts, quad menus, menus, toolbars, tool palettes, and colors. You can also add commands and macro scripts by selecting either a text or icon button to represent the command or script on the toolbar.
Most commands in the Autodesk VIZ user interface appear in this dialog as action items. An action item is simply a command that you can assign to a keyboard shortcut, toolbar, quad menu, or menu. The Keyboard, Toolbars, Quads, and Menus panels of this dialog show tables of action items that you can assign. (Tables in the Colors panel list UI elements, instead.)
Note: A few action items don't correspond to any elements in the default user interface. See Additional Keyboard Commands.