Albeit rare, the Subset plot can be used to plot points that belong to different subsets so the Subset plot attributes window provides controls that allow you to set the representation and size of the points. You can change the points' representation using the Point Type combo box. The available options are: Box, Axis, Icosahedron, Point, and Sphere. To change the size of the points, you can enter a new floating point value into the Point size text field. Finally, you can opt to scale the points' glyphs using a scalar expression by turning on the Scale point size by variable check box and by selecting a scalar variable from the Variable button to the right of that check box.