My Gamma Chi DD met with her PNM group for the first time today. They changed it up a bit from last year. I'm not sure about the details, but it seems that 1) instead of being grouped by dorm floor, it seems to be a more random allocation, and 2) instead of a group of 40-50 girls being assigned to a group of 2-3 GCs, each GC has about 15 girls for whom she is directly responsible.