If you are already a Directa customer, simply enter your 5-digit Directa customer number.
Where?
Log in, access your Dashboard (by clicking the icon in the top right), click Account, Indexing.
Within 48 hours you will receive a confirmation of the correctness, or not, of the customer number you entered through an e-mail.
During the investment procedure, you can indicate your wish to index the shares purchased, by putting a simple check in the appropriate box.