“Apostolic Band” might not be a term you have heard before, but the definition is more important than the phrase. We can look at the Biblical pattern for how Paul and his coworkers accomplished the mission of Jesus by reading Acts and the epistles. When we do that, we see both evidence of teaming (or banding) emerge, as well as patterns for how the team (or band) interacted together.

https://www.sentones.com/developing-leaders/apostolic-bands/