Are Pastors Primarily Facilitators?

One of the principles of church-based training is that, 'Pastors and elders are primarily facilitators in their roles as teachers and overseers.'

The roles of pastor and elder have been divided in various ways based on ecclesiology, but this discussion isn't aimed at that question. Are they primarily facilitators in those roles (regardless of how their roles are defined)? Does the passage in Acts 20 support this? Maybe Ephesians 4?

What about the pastor who says, "My call is to preaching the Word?" Or the elder who says, "I am to oversee the flock." Are they to mainly be facilitators? How do you see it?

Is it really...?

Who is responsible for training up the next generation of leaders for the local church? It seems like a big job, a huge responsibility. Who is best equipped to handle this role? Does the Bible have anything helpful or definitive to say on the issue?
Let's see if we can come up with some biblical foundations for what I know you are all thinking: the local church bears the responsibility for developing the next generation of leaders for the local church.