You can click on the Top Left Menu (3 horizontal lines) > Service Center > Change Bank A/C.
Enter the new bank details, upload a document (if asked by the system) to verify the details, and submit the request. We will first update your dashboard and then also update the mutual fund folios in which you have invested (if any).
Please note: If you have an auto-debit set up with the old bank account, this will be canceled. You can apply for a new auto debit once the new bank account has been updated on your dashboard.