To add a bonus goal to your campaign, follow these steps:
1. Navigate to the charity area > Fundraising and search for the campaign you wish to edit. Click on 'edit'.
2. Click on 'Advanced Options'.
3. Check the box Bonus Round - overall funds raised
4. Set a financial target for the bonus round. Note that only the additional target should be entered, not the total target including the additional target.
Don't forget to save your changes :)