
You can enable event overlap protection using allowEventOverlap config property. This will forbid placing an event at a location with existing events. This rules is enforced during the following drag and drop operations:
See Also
JavaScript
Example
<div id="dp"></div>
<script>
var dp = new DayPilot.Calendar("dp");
dp.allowEventOverlap = false;
// ...
dp.init()
</script>
ASP.NET WebForms
Example
<DayPilot:DayPilotCalendar id="DayPilotCalendar1" runat="server" AllowEventOverlap="false" ... />
DayPilot