Make sure the cell groups have a focus on cell multiplication. A danger can be on the focus too much on themselves. Healthy groups can stagnate. Make sure the groups are multiplying. New leaders do need to be trained.
Most churches have equipping tracks in place.
The mother cell leader would need to supervise a new leader. People will not lead small groups until they are presently participating in their small groups. There is a big difference between leading a cell group and being a full-time pastor or elder in a church. When Paul and other Bible authors talk about the office of the bishop, they were talking about top-level leaders who would certainly require additional leadership qualities. We shouldn t place those same qualities on a facilitator of a small group who is seeking to win his or her friends to Christ.