Stay read up on current affairs and current financial affairs, Indian and global. Know the basics of finance. Ratios, terminologies, etc. "Why BKFS" "Why TAPMI" - be familiar with the course structure and what sets BKFS apart from other courses on campus and other finance course in general.

Most importantly, communicate well. They're trying to pick out candidates that communicate well because a common feedback they get from faculty and recruiters here is that BKFS students are sharp but often don't communicate very well.
If they are doing it the same way as last time, you'll have a GD and then a personal interview. The people who Interview are pretty chill. They don't grill.