hello,

If you have registered yourself for the first round of counseling you can sit in the second round too. If you haven't been allotted a college in the first round, yes you can sit in the 2nd and mopup round. If you have been Allotted a college in the 1st round and want an upgradation, yes you can sit in other rounds but please know that Once you get a seat in another college, whether you like it or not, your seat in the first college will automatically be cancelled and given to someone else.

Hope this helped. good luck!!