You can now create a Bolt Circle Centerline in the NX PMI application. Defining the position for a bolt circle centerline is easy using either a “Through 3 or More Points” or “Center Point” method. A “Full Circle” option on the dialog allows you to specify whether the centerline is a complete circle or simply a partial centerline through a set of selected holes. The "Set Extension Individually" setting allows you to dynamically interactive with and control each centerline.
This video shows a brief demonstration of the new PMI Bolt Circle Centerline capability in NX including how a centerline that is associated to a number of holes in a pattern can be updated. I look forward to any feedback you have on this enhancement or suggestions you might have to further enhance NX PMI.