Dimension Pattern-More Flexibility for Pattern of Pattern | Creo 10

In Creo 10, there is more flexibility in Dimension Patterns for nested pattern (pattern of pattern) situations, such as with an incremental increase of pattern instances and a pattern instance count driven by relation or the shape of a graph. Watch the video for a series of examples.
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In the first pattern, how did you get the relative position point, inside the extrude feature?