i wonder if it could prevent from creating new event earlier than today, i tried to attach event but it doesn’t work
scheduler.attachEvent(“onEventAdded”, function(event_id,event_object){
             //any custom logic here
             if(event_object.start_date<new Date()){
    alert(“You can not create an event earlier than today!”);
    scheduler.deleteEvent(event_id);
    return false;
               }
        });
onEventAdded is not blocable. You can change the date of event from it, by moving it in future, but it not possible to block event adding.