Hello Nandini

If you have already reported to allotted college then even though you have not submitted fee for college allotted and you want to participate in second round of counselling then you can not participate because you have already accepted the allotted college by reporting at the college.if you have choosen float in your counselling then you are eligible for second round. 

Good luck for your future :) 

Feel free to ask if you have any further queries.