Straight to your questions:
1) With the current implementation of the control the columns cannot be frozen, as they are children of the AppointmentsPanel and are generated in the code.
2) To display something in this cell, you need to set some content to the according grid cell of the AppointmentsPanelGrid
. For that you will need to edit the whole template of the RadScheduleView. You can find more information about it in this help article: http://www.telerik.com/help/wpf/styling-apperance-editing-control-templates.html
Hope this helps.
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