If anyone needs, I have created a NX CAM application that postprocess each operation from a selected group independently.
To be able to use it, you have to copy the .dlx file to UGII folder or you may define $NX_CUSTOM_TOOL_BARS and place the .dlx folder in $NX_CUSTOM_TOOL_BARS\application
Use it at your own risk.
Thanks for sharing your program. You might get more feedback if you posted it in the customization and programing forum.