1. Slice Polygroup
Creating separated parts with Slice brush.
3. Display Y and Z plane. This way, you know which view you are looking at.
4. Go to the side view.
5. Hold Shift and Ctrl key. Choose a Slice brush.
6. Delete lower levels before slice a sphere.
7. Hold Shift and Ctrl, drag the pen.
8. Now the bject has new polygroup part.
9. Try SliceCircle. Hold the Space bar to relocate the circle.
10. To change the direction of SliceCurve, hit Alt key.
11. Now the object has separated parts with polygroup assigned.
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