I only see a few locations in PerfectIt. How do I make the box bigger?

Collapsing the Ribbon in Word will cause the locations box to expand, allowing you to see more locations. To do this, right-click on the Ribbon and select "Collapse the Ribbon":

Collapse Word's Ribbon Click "Collapse the Ribbon" (Enlarge image)

You should now be able to see more locations:

More locations are shown when the Ribbon is collapsed More locations are shown when the ribbon is collapsed (Enlarge image)