68 The efforts of individuals are not sufficient to solve the many problems connected with seeking out and selecting missionary vocations. Study these problems in your meetings, Venerable Brethren, and in attempting to solve them make use of the Institutes, if there be any, in your respective countries that are devoted to the missionary apostolate. In this way new methods will be devised in addition to those already in use, by which the hearts of young people may be drawn more readily to missionary vocations; and thus your own obligations which bind you in conscience to work for the general welfare of the Church will be fulfilled in some degree.
Source: Fidei Donum (Vatican.va)