Maya Characters needing polygon groups defined

I have two full body human models in OBJ format, one male and one female, each totaling just over 10K faces. The models when loaded into Maya contain 3 polygon groups: eyeLashes, body, and eyes. I need the face and head to have additional polygon groups (shading groups) created that identify various aspects of the face. This grouping information is necessary for an automated facial rig to attach. Note also that it is critical that no polygons or vertices are moved or added in the geometry, only information about polygon groups is to be added.