Haw. Rev. Stat. § 412:10-306: Joint accounts.

A member may designate any person or persons to own a share or deposit account with the member in joint tenancy with the right of survivorship, as a tenant in common or under any other form of joint ownership permitted by law, but no co-owner, unless a member in the co-owner's own right, shall be permitted to vote, obtain loans, or hold office or be required to pay a membership fee.