To add a bonus goal to your campaign, follow these steps:
1. Go to the charity area and click Fundraising in the side menu. Find the campaign, click the actions button (⋮) on its row and select Edit.
2. Click the Advanced Options tab.
3. Turn on the Bonus Round - overall funds raised toggle. This option appears only if the campaign has a target.
4. Enter the bonus target in the Bonus round amount field. Note that only the additional target should be entered, not the total target including the additional target.
Don't forget to click Save :)