Unlike the usual date and time rows, timeline view can be displayed with additional header rows to display the years, months and week numbers. To do so, define the ScheduleHeaderRows tag which accepts an collections of ScheduleHeaderRow and each object includes the Option property to define the specific header row type such as Year, Month,Week and Date. The ScheduleHeaderRow also includes the Template option to provide label customization on these rows. The ScheduleHeaderRows is applicable only on timeline views.