Nursing Cas

I have put in my application for a NP program and nursingcas has evaluated my GPA. I see many ppl commenting on their 'cummulative' which I understand is your overall course work however I also see comments about their 'nursing GPA' through nursing cas. When I look at my nursingcas GPA breakdown it has it by Type (Math, English etc.), Semester, School, Cummulative and Other Course Work. But I don't see a 'nursing catagory'. Can someone please explain how to determine my 'nursing GPA'
Thanks,
PD