About Manufacturing User-Defined Features (Groups)
This functionality enables you to create the NC sequences necessary to manufacture a group of features (UDF) only once. You can then group NC sequences and place them in any other models that contain the same reference features’ group.
If you do not reference a design UDF, the information about the reference part is stored with the group. If you then place the group in another manufacturing model that contain the same reference part, you have an option to automatically resolve the placement references.