According to the official website: https://www.irma.ac.in/programmes/pgdrm-post-graduate-diploma-in-rural-management/admissions/eligibility for pursuing their PGDRM course, a graduate from any discipline with a minimum of 15 years of education with a minimum aggregate of 50% is eligible. It is 50% for General Category and 45% for SC/ST/DAP/ So, even if you are a BBA Graduate, of you have the required aggregate, you are eligible for studying in IRMA Anand.