You just need to turn it over now! Refer to here for bookmaker turnover requirements.
Eg/
Essendon are @ $2 LADBROKES
Hawthorn are @ $2 CROWNBET
$1306.25 Lads
$1306.25 Crownbet
Now you have met the turnover requirements as you have staked through your bonus winnings x1 above $1.01 odds.
**Ladbrokes may make you turn over x2 above $1.01 odds. Which means you would need to turn over $2612.50 before you can withdraw the full amount