to make plans; to decide on objectives and draw up steps or a schedule to achieve them.
夏休みの旅行の計画を立てるのが楽しみだ。
I'm looking forward to making plans for my summer vacation trip.
会社では来年度の事業計画を立てる会議が始まった。
At the company, meetings to draw up next year's business plan have begun.
試験に合格するには、まずしっかり計画を立てることが大切だ。
To pass the exam, it's important first to make a solid plan.