Dear aspirant,until JOSAA 7 rounds if you are having category rank then you are alloted the branch and college regarding the category rank. As per your situation you have opted for float,but in 7th round your choice will automatically be frozen and you need to report physically in the college alloted. If further you will choose to go for CSAB special round then only your CRL rank will come into play.

For further queries, feel free to ask in the comment section below.