A Timeline is a display of a list of events in chronological order. These events are provided by calendars. A calendar is a source of events.
You navigate a timeline by adjusting its visible date range. You can group events (by environment, category, calendar,…) using horizontal swimlanes.
Different types of calendars will provide different types of events.
Swimlanes: manage how Events should be grouped into Swimlanes
Calendars: manage the types of Calendars & Events to display on current timeline
Time Navigator: scroll to next/previous period or to jump to a specific date