Hi Aspirant!

According to official guidelines if you choose the floating option then it will only allot you another seat if you will get better college option in next round.Hence if you get the college which is top in your lock choices then you do not have to worry because you will not get another seat but if there is any college above your alloted college then you have to leave seat and go for the alloted college.

To restrict that you can contact them by calling them or wrote mail to them.

I hope it helps.

Happy hustling!