Hawaii Revised Statutes Division 3. Property; Family § 510-7

The person in whose name any community property stands is a necessary party in all actions and other legal proceedings brought affecting the community property, or arising out of the management of, control of, or dealing with such property. Any other person having or claiming an interest in the property may be but need not be joined as a party; provided that no judgment, decree, or other order shall be enforced against any person except to the extent of the person's interest in the community property, or against the separate property of the person, unless the person is a party. This section is subject to any judgment which may be entered pursuant to section 510-6.