noun
Refers to a prearranged plan or set of arrangements, often in a somewhat formal or business context. Not a casual word for 'plan'.
会議の手番を整える。
Arrange the plans for the meeting.
旅行の手番はもう決まった。
The travel arrangements have already been decided.
The derivation is uncertain. The kanji 手 (hand) and 番 (turn, number) suggest a 'hand-arranged order', but this is speculative.