Select all areas > Editor > Edit > Options
Use to customize the stacking order of the variables on an area graph.
You can also change the area options on a contour plot, and a scatterplot or matrix plot.
Variable Order
Column order (first on top): Choose to stack the variables in the order they are entered in the dialog box, with the first variable you enter on top of the stack.
Variation order (largest on top): Choose to stack the variables by the degree of variation, with the variable demonstrating the largest variation on top of the stack.