You can add active areas to the time header cells using BeforeTimeHeaderRender event handler.
JavaScript
dp.onBeforeTimeHeaderRender = function(args) { args.header.areas = [ {left: 0, top: 0, right: 0, bottom: 0, v: "Hover", onClick: function(args) { alert(args.source.start); } } ]; };
ASP.NET WebForms
protected void DayPilotCalendar1_BeforeTimeHeaderRender(DayPilot.Web.Ui.Events.Calendar.BeforeTimeHeaderRenderEventArgs ea) { ea.Areas.Add(new Area().Width(15).Top(0).Bottom(0).Right(0).CssClass("resource_action_menu").Html("<div><div></div></div>").JavaScript("alert(e.start);")); }
ASP.NET MVC
Not available yet.