Please choose a domain of your interest and contact people on LinkedIn for the related topic of interest. It will give you a better understanding but ultimately you only have to make the final decision considering that a lot of things change every year.

Last year eligibility was grading pattern in first 2 semesters and this was followed by an interview. For this year it might differ, so please confirm with management.

Only management knows about the same.

In my batch and previous ones, there were a maximum of 5 seats.

I just uploaded a video on the same topic. Hope it helps! Feel free to ask any other question.