How to make changes in CAT application form after registeration?

Source : catiim.in

Q.1) If I have made any mistake(s) while registering for CAT 2011, can I make changes later to rectify?
Ans. If you make mistakes while entering the application data, you may login to https://iim.prometric.com and select “Edit Profile” to make changes to your personal details such as address or “Edit Application” to make changes to your application data such as educational information or interview location. For security reasons, editing of candidate’s full name and username will not be allowed. To reschedule your appointment, select “Reschedule an Appointment” to choose a different test centre, date and time of your test, of course, subject to availability. The ability to edit application profile and registration details will be available until the registration window is closed i.e. til 11:59 PM on 28 September 2011, IST.
Note: If you make changes to your profile or reschedule, you must carry the most recent admit card and attend the most recent test session.


Q.2) What are the timings to contact the Candidate Care helpline?
Ans. The FAQs, IVRS and online instructions are designed to enable self-service. You are requested to use these tools which can guide you through the entire process and help answer most of your queries. In case you are still facing issues, then CAT Candidate Care Support is available by phone and email.
Phone: 1-800-103-7383
Webmail:Contact Us 
Phone support availability:
Registration Phase: 17 August – 28 September 2011, 9:00AM to 6:00PM from Mondays to Saturdays.
Pre-testing window: 29 September – 21 October 2011, 9:00AM to 6:00PM from Mondays to Saturdays.
Testing window: 22 October – 18 November 2011, 8:00AM to 7:00PM daily.
Post-testing window: 19 November 2011 – 31 January 2012, 9:00AM to 6:00PM Mondays to Fridays .
CAT Candidate Care will be closed on the following national public holidays:
* Monday, 22 August 2011 – Janamastami
* Wednesday, 31 August 2011 – Idu’l Fitr
* Thursday, 6 October 2011 – Dussehra
* Wednesday, 26 October 2011 - Diwali
* Monday, 26 December 2011 – Christmas
* Monday, 2 January 2012 – New Year’s Day
* Thursday, 26 January 2012 – Republic Day
Webmail support availability: 
Webmail support will be available from 17 August 2011 until the end of the first week of February 2012. Queries, received by webmail, will be responded to within 2 business days. Do not send the same email multiple times, as it will delay the response process.