The treeAutoExpand property (boolean) lets you configure the parent tree node auto-expansion during drag and drop event moving.
DayPilot.Scheduler.treeAutoExpand
true
dps.treeAutoExpand = false;
Event calendar/scheduling AJAX components. Available for JavaScript/HTML5/jQuery, ASP.NET, ASP.NET MVC. Build resource booking, project management, time tracking applications, personal and shared event calendars.