During the step-by-step procedure of creating your pie chart you will find the Pie Chart Properties page of the Create New Chart dialog box A window used to supply information to Publisher..
If you are editing an existing pie chart A pictorial representation of information from a table eg a graph., double-click on the chart to display the Edit Chart Properties dialog box and select the Pie Chart Properties tab.
From the Item list box, select the item you want to separate from the rest of the pie chart.
Drag the Amount slider to vary how far the slice is separated.
In the degrees box, type the angle you want to rotate the pie chart by or drag the radius of the circle to specify the angle.
Note:
You can see the effect of the changes you make in the display box.