Hi Manish !

We select our specialization or major in our final year of graduation in Christ university for BBA Hons program. One of my friend's is pursuing BBA Hons from Christ University's Central campus and what I have got to know from him is that you select you major subject in the beginning  of your final year . Till your second year of graduation you and the students with  regular BBA program will study same subjects but in your final year your subjects change as you opt for your specialization.

Hope this answer helps you.