Get the food cold first
After assembly or , put food into chilled holding with room for air to move, and note when it went in.
Trolleys are spaced in the holding room with doors closed, and the time in is on the record.
A trolley waits in the corridor because the room is full, and it counts as on the sheet.
says a transport vehicle is designed to maintain the temperature of food already chilled, not to chill it. Finished-food storage must be sized for peak activity.