No such option is available to anyone including me. There is a long story behind attending the campus at Chennai.
I still remember the day. 10 days before the WIRC campus and 2 days before the SIRC campus, at around 11 AM, I was working on my computer and got email form the Institute, inviting for the campus of Neyveli Lignite at Chennai.
I immediately called the Western Regional Council and informed them about the email received from the Institute.
They told me that Neyveli Lignite is PSU companies and they are eligible to shortlist the students from all over India. They also told me that if i go to chennai then i will only allowed to attend the interview of Neyveli Lignite. For rest, i will be not allowed to attend the interview.
Since only 2 days were left for the SIRC campus, I had a arguments with them, but nothing happened. Then I immediately booked the ticket in tatkal and went to chennai for the interivew.
Chennai was the turning point in my life. In the interview, i did not answered a single answer but i learned so many things from their. Once back from Chennai, I worked hard and strengths my weakness.
This is Why I had attended Interview at two place. I think this is not applicable now. But if it is PSU company then there are the chances that you can get shortlisted for any place for the campus.