Watchtower 1966 5/15 page298
These groups are small so that help can be given to build up balance and maturity.
These are called congregation book studies, and the one having oversight is called a study conductor. These brothers have the same attitude as Paul tells of at 1 Thessalonians 2:7, 8: "We became gentle in the midst of you, as when a nursing mother cherishes her own children. So, having a tender affection for you, we were well pleased to impart to you, not only the good news of God, but also our own souls, because you became beloved to us." There are many ways these book study conductors help those in their care. They teach them how to study. They train them in the ministry, going with them from house to house. They help them to attend the congregation meetings. In fact, they go to the homes of their brothers and help them to work out a practical schedule that will allow room for all these blessings as well as taking care of the family.
If one in the group should get sick or meet with an accident or get spiritually sick, this same study conductor hurries over immediately to supply spiritual food and encouragement to make up for what is missed while the person is convalescing. He will assist the shut-in to share in the ministry in some way, helping maintain balance even in times of stress. This is the way it should be,