Leading is something we can all do, whether we are leading large numbers of people or just a few. We don't have to be exceptionally gifted. Second, he is a person who is learning from God's Word, in order that he can pass it on to others. Third, an able person is one who is growing in character. These things commit as a trust to trustworthy men who are of such a character as to be adequate to teach others also.
Character includes such things as honesty, humility, faith, confidence, teachability, selflessness.
Qualities like this grow as we grow spiritually. It is character that makes us faithful. The purpose, then, of your multiplication ministry is to build up others and train them to do what you are doing. We are not looking for super-Christians. We are looking for people who simply want to grow spiritually, who want to be used by God, even through they might be young in their walk with Christ.