A conference is the most comprehensive event in Indico. You can create tracks in which you can call for abstracts to be submitted; these abstracts can then be accepted and become contributions in your conference. A timetable can be created which can include many sessions; these sessions can be split into slots if you need to further divide the session. The sessions and slots can contain contributions or you can directly have a contribution in the timetable. Contributions can have sub contributions. Material for example papers can be added to these contributions, sub contributions, sessions and directly to the conference.