You should receive an offer to the email address you registered with. Within that email you will be able to click through to your portal and log in. On your homepage, you will see details of your role offer along with a button on the right-hand side of the screen which will allow you to view the details of your offer. Here you will find your role summary and venue details.
You will need to either accept or decline your role offer (or offers) using the buttons on your offer summary page. You will then receive a confirmation email. Please note that if you decline your role, you will not be offered an alternative.