Hi:-). Happy new year~~
You can get the Gcode exactly what you want by Use NX CAM with Post Builder.

Fanuc 3axis cnc mill
NX CAM - How to Create Customized Mill 3axis Fanuc post with NX POST BUILDER & TCL #1

Fanuc 2axis cnc turning
NX CAM - How to create Customized 2ax Turning fanuc_post With NX POST BUILDER & TCL in 18 Steps .#1

And you can get PDF textbook for post builder.

Good Luck! In 2020.