Check our feature matrix to find out which payment providers support preauthorization.
Pre-authorization means the reservation of an amount. It is a money guarantee, in which a certain amount is blocked for a predefined period of at least seven days. There is no maximum reservation amount. This depends on the card issuer.
In order to activate pre-authorization as a payment type select "Pages > Overview" and then select "Payment information" and click on the "Pre-authorization" button under Payment settings.
You can find a more detailed article on pre-authorizations in our developer documentation.