If you are doing an online ticket sale, you can use EventBrite. The AUCSA has a centralised account on which ticket sales are managed. You need to update your CAO to use eventbrite because they will set-up the organiser part. You can then log in to create your event. To get going, you need a banner, name, time and location, and a description. Make sure you connect your facebook account to the event you are creating, you can automatically create the event from there which saves you time. It also gives the possibility to sell tickets on facebook itself which increases ticket sales. Contact your CAO to set it up.