In doughnut or sunburst plots, set Group Edit Mode to be Independent and then select a single ring to set independent width.

The following settings dependent or not in Independent mode is controlled by system variable @PGI

0 (default) - dependent/shared.

1 - independent (it's rare since usually they will share same gap, rotation, etc).

• Horizontal Offset (sunburst and doughnut plots),

• Rotation group (sunburst plot)

• Doughnut group (sunburst and doughnut plot)

3D View group on the Pie Geometry tab of the Plot Details dialog are hidden in Origin 2023 since 3D doughnuts are not supported.
It is hidden to avoid confusion.