Complex work rarely fails because people are not busy. It loses momentum when the outcome is vague, ownership is shared but not clear, and important decisions remain implicit.
Start with the outcome
A useful brief describes what must be different when the work is complete. That gives teams a basis for prioritising effort, testing decisions and communicating progress.
Make ownership visible
Every material decision needs a clear owner. This does not remove collaboration; it gives collaboration a route to action.
Keep the working rhythm simple
A short, consistent decision and reporting cadence is usually stronger than a large governance structure that nobody can maintain.