In the Events & Actions view on the Admin Portal, create an action by clicking the + ACTION button.
Put the URL of your Webhook under Configuration.
You can also create custom headers (if your webhook requires authorization) and set Webhook Retry by turning it on while creating or modifying an existing action. You can set the following:
Name Min value Max value Number of Retries 1 4 Retry Interval (in seconds) 10 900
Pair your action with the previously created event listener without leaving the Actions view. To do this, click the + EVENT LISTENER button and select Choose an existing event listener.
Save your newly created action by clicking the SAVE CHANGES button.