Hello Shikha! For pursuing PGDM in HR, you need to appear for one or the other MBA entrance exams such as CAT, MAT, XAT, IIFT, GMAT, SNAP, MHCET, etc.. You need to prepare for them and you need to apply for the colleges you desire separately and if you clear the cutoff of that particular college you have to appear for group discussions, personal interview, WAT, etc. and if you clear them too you are given admission to that particular college for pursuing MBA. There are many colleges which teach PGDM in HR. All the best!