Main Tab
Name - The name of your graph item, you cannot leave it empty
Object - By clicking on the 
button, the Select Object Dialog will appear. From here, you can select the object from which you want to import your data to the graph.
Filter - By clicking on the button, the Select Filter Dialog will appear. From here, you can choose or create a filter which is going to filter your data from your selected object.
Show marks - If you enable this feature, the values will appear on your pie slices as well.
Visible - If you do not mark this feature, your graph will be invisible.
Pie color - With the help of this feature, you can adjust the color of your pie. By clicking on the button, the Color Dialog will appear with the help of which you can choose your desired color.
Circled - This feature makes your pie circle shaped. If you do not enable it, your pie will have the shape of an oval.