Hello Aditya,

If you have floated or freezed the seat you have been  alotted then you need to visit the ARC centre. you can move for further rounds and if you got another seat in a better college and you want to take admission in that college than only you have to visit the arc centre.no need to pay the fees again.

You have the visit the ARC centre only if you want to freeze or float a seat in the starting round.

hope this may help you.