4. There aren't any layer sets defined yet, so click the Define LayerSets… button.
5. Enter a name for the Layer Set: HS_TOP_INNER, then hit New. That creates the layer set.
6. Next, depending on your application, choose which layers you want this rule to apply to. For example, we would prefer
high-speed signals to be routed on the top of the PCB and the inner layer and in some cases the GND layer, but no traces
are allowed on the bottom half of the PCB (to control for Capacitive plane couple, controlling the EM signals in the Z-axis,
etc.).
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OrCAD X High-Speed Digital Design Guide