Use the Manual tab to edit the curves on the heel.
Sides X — Select this option to edit the side curvatures of the heel in the X direction. When you click Start, the view changes to View from right.
Sides Y — Select this option to edit the side curves of the heel in the Y direction. When you click Start, the view changes to View from back.
Back X — Select this option to edit the back curve of the heel in the X direction. When you click Start, the view changes to View from right.
Front X — Select this option to edit the front curve of the heel in the X direction. When you click Start, the view changes to View from right.
Top-piece Back — Select this option to edit the back curve of the heel top-piece. When you click Start, the view changes to View from bottom.
Top-piece Front — Select this option to edit the front curve of the heel top-piece. When you click Start, the view changes to View from bottom.