You can use the parameters on this tab to adjust the contour.
Gap width
Defines the distance between the processing object (green contour) and the contour. It modifies the size of the rectangular contour cut.
Boundary
Allow setting the contour top and bottom boundaries (in Z axis direction).
Side 1
Defines the top boundary in the positive direction of the Z axis of the coordinate system at creation time.
Side 2
Defines the top boundary in the negative direction of the Z axis of the coordinate system at creation time.