I know that there is few properties which can be stored into database (start time, end time, subject).
My main goal is to store priority and  timemarker data also but it seems there is no way to get them.
I've noticed that if time marker is added into appo

When a time line view is used with resource descriptors and a single resource contains multiple appointments ScrollIntoView scrolls to the wrong position. The resource slot is scrolled in the view but the appointment is not in view when the slot is large.

Attached is a sample project demonstrating the problem.

There are some double lines between the groups in the ScheduleView.
Also, the lines of the headers in the MonthView are displaced.

Available in LIB version 2015.3.1026, it will be also available in the 2015 Q3 SP.

When using the CreateAppointment command from a context menu, right clicking on a Recurrent appointment and the created appointment takes the Start/End time of the parent appointment not of the ocurrence and also the created appointment is recurrent.

Available in LIB version 2016.2.525, it will be also available in the 2016 R2 SP1 release.

When have several day events and appointments built for the day, changing  the view definition by week  to  day view definition layout broken.

Appointments are rendered below the AllDayArea.

If the ViewDefinitions are declared in XAML, the binding is ok.

Available in LIB version 2016.1.208, it will be also available in the 2016 Q1 SP1 Release.

Available in LIB version 2016.1.201, it will be also available in the 2016 SP1 Release.

Add ability to display arrows to the scheduleview when there are appointments outside the visible area
http://www.telerik.com/community/forums/wpf/scheduleview/mark-to-see-items-out-of-visible-range.aspx

Ability to have a reverse flow of dates in TimelineView - start visible days from a later date and end up with an earlier date.

With the current implementation fires constantly while dragging over the ScheduleView.

Available in the R1 2017 SP1 Release.

Introduce properties for customization of the navigation panel such as:
- Showing/hiding a today button
- Showing/hiding the selected view definition ListBox
- Showing/hiding the RadDatePicker and navigation buttons

In current implementation if the Appointment starts before the DayStartTime its not possible to scroll to it using ScrollIntoView method.

When the appointment is few days long and the IsAllDayEvent is Not set, the appointment is rendered on the previous day. The DayStartTime should also be set to something different then 0:00h.