When you're ready to place your bet, select the BONUS BET button in your bet slip. If you have multiple bonus bets available, select the one you want to use by clicking it. Your stake area should light up in blue. When you're ready, place your bet.
Step by step...
If you have a bonus bet in your account, simply click on your desired market/selections and click the ‘Bonus Bet’ button in your bet slip. Remember to leave your STAKE section blank (we want to use a bonus bet, not our cash funds).
If you have a single bonus bet available, it will automatically select. If you have multiple bonuses available in your account (shown below), select the one you want to use by clicking it.
Once you are ready, hit place bet to use your bonus bet. Good luck!