It is possible, according to the options chosen at the time of the signature of your contract, to capture payments automatically or to capture payments manually.
If you decide to configure automatic capture, the customer will be debited automatically, and the money will be captured on his/her account the day of his/her purchase.
If you decide to configure manual capture, then you will have to capture the payment for the order before the authorization period for that order ends (within 6 days from the payment date). Manual capture configuration allows for example to debit the account of the customer only when the order is shipped.