Adding a custom field to student group table in Peoplesoft

Hi, has anyone had any experience making any modifications to student groups table in Peoplesoft?  Particularly, adding a custom field or more to the student setup table to help categorize student groups or fields that can be updated for students?  Looking for other universities that might have had experience with this.

Thanks!

Bev Victoriano

University of Kansas
bmedv@ku.edu