I have just filled up and sent examination form to IEI, Kolkata with requisite fee. Now I want to change exam centre. How can I do so?

You should send an application to Director (Examinations), The Institution of Engineers(India), 8, Gokhale Road, Kolkata 700020 W.B. mentioning your membership number and DD number of fee (if possible) stating the reason for change of exam centre. It is upto him to change the exam centre.