The Customize dialog box is the place to start for all of your toolbar and menu customizations. It can be opened from the Tools menu (Customize command), the View menu (Toolbars submenu), or the Toolbar Options button .
As you can see in the picture on the left, the Customize dialog box has three tabs. One is for toolbars, one for commands and menus, and the third has all the remaining customization options. Not only is it the place to change or create toolbars and menus, it's also the place to reset or delete them.
When the dialog box is open, menus and toolbars become editable and do not work. So if you click a menu command or toolbar button, nothing will happen.
As you will discover in this lesson and the next, you cannot change a menu, command, or toolbar without the Customize dialog box being open.