is it possible not to have an option of online spot registration when you sign in to your id.
Yeah may be. Because every year there is different option or interface in the account.
Its depend upon you. If you want to participate in it then fill it otherwise leave it. But let me know you, if someone who didn’t got seat through merit list and he didn’t fill the online spot registration form. Then he /she will not consider in the next round of result.