ShowTodayIndicator - Specifies whether to display the Today indicator.TimelineHeight - Specifies timeline height (in pixels).AllowResize - Specifies whether the height of a timeline can be modified by a user or in code.TimelinePosition - Specifies the visibility and position of a timeline.Use the GanttControl.OptionsTimeline property to access and customize the following timeline settings: Your browser does not support the video tag. Select Multiple Tasks (click on a task and hold down the Ctrl key to select the task).Add/Remove Tasks and Milestones to/from Timeline.Displays a timeline at the top of the Gantt control. The Gantt control can display a timeline at the top or bottom. The timeline's context menu allows users to add/remove timeline bars, remove tasks/milestones from the timeline, or quickly navigate to a task within the Gantt tree and chart. The timeline can display multiple timeline bars with tasks/milestones, a today indicator, and date range selector. The Gantt control itself allows you to plan/manage projects, while the timeline displays start and due dates for individual tasks and offers a bird's eye view of project progress. Our WinForms Gantt Control ships with a new timeline UI element (v23.1).