This option allows you to define how your post handles groups. You can organize your operations into groups in Unigraphics NX to create more than one NC program in a part file. The system considers each group as one program and you should considered it as one complete NC tape. The default setting for this option is OFF. You should not use this option unless you want to postprocess more than one NC program at a time.
If you select more than one group and you have this option turned ON you get one file that contains all of the groups (programs) that you have selected. The system names this file my_file.ptp. You also get an NC program file for each group or program you have selected. The system names them my_file_group.ptp. If your base file name is "nctape" and your group or program name is "O1234" then the name of your file will be nctape_O1234.ptp.
Do not mix operations in groups with operations outside of groups when you have set the group output to on. This causes unpredictable output. When you set the group output to off, you only get a single NC output file called my_file.ptp. The system outputs all operations in any selected group in a single NC file. The system ignores all group organization.
You can use the name of the group or program in Unigraphics NX as the program name in the Start of Program event. The system passes this to you as the variable name mom_group_name.