This is what the instruction book says:
Contribution to the Domestic and Sexual Violence / Child Abuse and Neglect Funds
The Hawaii Children’s Trust Fund provides moneys for the award of grants for primary and secondary prevention activities to pre- vent child abuse and neglect. The Domestic Violence and Sexual Assault Special Fund provides moneys for programs and grants or purchases of service that support or provide domestic violence and sexual assault inter- vention or prevention. The Spouse and Child Abuse Special Accounts provide moneys for staff programs, and grants or purchases of service that support or provide spouse or child abuse intervention or prevention. If you have an overpayment of at least $5 ($10 if married and filing a joint return), you can choose to contribute to these funds. Fill in the appropriate oval(s) if you want to contribute $5 to the Hawaii Children’s Trust Fund, the Domestic Violence and Sexual As- sault Special Fund, and the Spouse and Child Abuse Special Accounts (or $10 if you are fil- ing a joint return and your spouse also wants to contribute). No other amounts can be ac- cepted. Your contribution will reduce your refund. Once made, the contribution cannot be revoked.
This seems to be their web site.
https://www.hawaiicommunityfoundation.org/strengthening/hawaii-childrens-trust-fund
