In any of the three views we just saw, you can adjust the time that you’re seeing in three different ways.

The first is to use the Zoom In and Zoom Out buttons on the standard toolbar. Or, you can click the View menu and click Zoom for a more precise zoom tool.

The third way is to adjust the timescale itself. Click the Format menu and click Timescale and you will see this dialog:

This allows you to choose how many tiers are displayed, and which unit each will use. You can also set the label style, alignment, and size for each tier.