When the user Postprocesses a set of operations, NX would create a Program Group and put all the operations in it. In the latest NX versions it does not work.
Solution
In NX 1872 and above versions a new functionality was introduced which deals with postprocessing of conseutive and non-consecutive operations(irrespective of Program Group).
With this Enhancement it is possible to inherit the details of the Program Groups (UDE) of the respective operations while Postprocessing or performing Simulation.
Creating a Program Group automatically will violate this new functionality and hence,
With this addition of functionality, the automatic creation of Program Groups has been discontinued.
Please find the below link for more details.
https://docs.sw.siemens.com/en-US/product/209349590/doc/PL20190701134252622.whatsnew/html/xid1660714
Notes