Pie Auto Shapes initially have three control points. There are control points for dividing the shape into slices, adjusting slice size, and for resetting the pie to one slice. You can add as many sections as you want using control points. For each new section, Fireworks adds a control point for resizing or splitting the new section.

To add sections to a selected pie:

To resize a slice of a selected pie:

To reset the a selected pie to one slice: