If you are limited to working with one screen, you will find it useful to make a custom toolbar to assist in compiling a geologic map. Simply right-click on the toolbar area and scroll through the list of available toolbars to the word 'customize', then make and name a new toolbar. You can then drag individual tools (commands) from the long lists of possibilities onto your new toolbar. In some cases, you will find that you have to drag the tool from an existing bar on your screen. The scale tool is an example that comes immediately to mind. The shot above is from my laptop.