Hello,

college option and branch choice is given in the counselling application form. that is final. You can't change in middle of the process.

in counselling process, you can upgrade your given option. either you can upgrade branch or college option among the options given by you in the counselling form.

so while filling the form give all the college options in which you are interested and have possibilities to get admission.

for more details, please visit the link :- https://engineering.careers360.com/articles/wbjee-counselling

Hope it helps!