You can refer a friend to be qualified Runner and earn money from it. (This is only available in NSW, VIC, QLD and WA at this stage)
Your earnings are dependant on the number of deliveries your friend completes.
You will earn $20 when your friend completes first 20 deliveries.
You will earn another $100 when your friend completes first 100 deliveries.
Here are the steps you can share your referral code:
Go to your Account, then click "Invite friends", then share your unique referral code to your friends to win the rewards.