A sterile flight deck policy defines cabin-to-flight-deck communication during critical phases; flight deck door policies define locking, access and response to unauthorised entry; procedures coordinate cabin and flight crew on passenger safety information, cabin readiness, turbulence, emergencies and other listed matters; cabin crew notify the flight crew of any safety-related situation; standard wording and signals are recommended; and cabin crew are notified when to be seated for takeoff, when descent begins and when to be seated for landing (CAB 3.3.1 to 3.3.7).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.