Hey there

If you have not chosen float option then in seventh round you choise will automatically be frozen and that will be your final seat. You have to report at the reporting centre in order to float the choice.

Check complete guidelines for Jossa counseling

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/josaa/amp&ved=2ahUKEwi-msbUhLHjAhVGWysKHb_7BL8QFjAEegQIARAB&usg=AOvVaw2FP7dykFcEyfwr-CCvN6Kz&ampcf=1

Good luck