Idaho Code § 6-539

When security is taken by the referees on a sale, and the parties interested in such security, by an instrument in writing, under their hands, delivered to the referee, agree upon the shares and proportions to which they are respectively entitled, or when shares and proportions have been previously adjudged by the court, such securities must be taken in the names of and payable to the parties respectively entitled thereto, and must be delivered to such parties upon their receipt therefor. Such agreement and receipt must be returned and filed with the clerk.