The video below shows the few basic steps to take to create a “part family” part.
It assumes you have a part in NX or Simcenter which has parameters (such as sketch dimensions and other feature parameters).
The video below is also available on YouTube: https://youtu.be/VRkENsBgpDY
The video below shows the same few steps above, in context of modelling with parts and assemblies.
The video below is also available on YouTube: https://youtu.be/6PHcLQs6zJ0