HRS §510-7
Who must be named in lawsuits about community property
If community property is involved in a lawsuit, the person whose name is on the property must be a party. Others with an interest may join but don't have to. A court order can only be enforced against someone's share or separate property if that person is a party.
courtsspouses
The statute, as written — Representation in legal proceedings
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.
LawTrove is not legal advice. The summary above is a computer-generated restatement — the authoritative text is the official version linked above.