Business Meetings (商务会议): This is the most common context. Before any formal meeting, participants will typically receive the `议程`. It's standard practice to ask, “今天的会议议程是什么?” (What's the agenda for today's meeting?).
Conferences and Official Events (大会与活动): For a multi-day conference, the `议程` refers to the entire schedule of speakers, panels, activities, and breaks.
Politics and Diplomacy (政治与外交): The term is used to describe the official list of topics to be discussed in diplomatic talks or government sessions. For example, “The economy is at the top of the government's agenda” (经济问题是政府的首要议程).
Figurative Usage: “Hidden Agenda” (隐藏议程): Just like in English, `议程` can be used figuratively to refer to someone's underlying, often secret, motives or goals. You might hear someone say, “他有自己的政治议程” (He has his own political agenda).