§1. Unless the law or the statutes provide otherwise, an election can also be done by compromise, provided that the electors, by unanimous and written consent, transfer the right to elect on that occasion to one or more suitable persons, whether from among the membership or outside it, who are to elect in the name of all by virtue of the faculty received.
§2. If it concerns a college or group composed of clerics alone, those commissioned must be ordained; otherwise the election is invalid.
§3. Those commissioned must observe the prescripts of the law concerning elections and, for the validity of the election, the conditions attached to the compromise agreement which are not contrary to the law; conditions contrary to the law, however, are to be considered as not having been attached.
Source: Code of Canon Law (Vatican.va)