What’s the procedure for resignation from all India round 1 seat if we get a better branch in state round 1?

What’s the procedure for resignation from all India round 1 seat if we get a better branch in state round 1?

If State R1 results are before Feb 3rd - then go to ai R1 insittute, intimate them follow process that they mention (resignation letter if required), ask them to enter info in mcc portal, GET RELIVEING LETTER from mcc portal, collect originals, check when fee would be refunded,and that’s done.

thank you sir