Whether you are an individual or corporate investor, you are required to submit an official letter to your respective ADA/stockbroking company expressing your intention to update your signature.

For an individual investor, you need to be present before the ADA/stockbroking company with the official letter expressing the intention to update your signature.

The letter should contain the following:

a. The CDS account number;
b. Samples of the current and the new signature;
c. The new signature's effective date of use.

For a corporate investor, it requires an official letter duly signed by the person(s) appointed to operate the CDS account pursuant to the board resolution of the company or a new board resolution on the update of signature.