Hey there,
Dear candidate hope you are doing well, your question is not much clear but if you want to know the difference between freeze float and slide options in any of the counselling procedure then I will tell you about it.

Freeze option is used in any of the counselling when you have got your desired Seat on Your have got any seat in the counselling, and you have decided to not participate in any further rounds of the counselling.
The slide option is used when the candidate select any institute but he can shift any stream of higher preference for the further rounds in the same institute.
The flute option is used when any candidate chooses the seat allotted to him in the counselling round but we can also for the participate in the counselling and if you get any better college than the previous allotted one that can then he can go for it. Here you can change the college also.
All the best!!!