Hey

If you get a college but you are not satisfied with the college or the branch and if you think you can get a better then you can choose float option.
It means you have been allotted a seat and youve accepted the seat but you want a better option. In this case once you are allotted a seat in the further rounds,youll lose the seat which was allotted previously.So, if you want to secure this college seat then you will have to pay the fees.
If you will not pay the fees of second round then you will be out or rejected so it is not recommend to not to pay the fees ,so pay the fees as soon as possible to avoid various problems in future.

Hope it helps you !!

Thanking you!!