We have a resource ID associated with all events. Suppose there are some event time slots already created on a day (say at 9AM-10AM, 10.30AM to 11.30AM, 12.00 PM to 2PM, 4PM to next day 10AM). We need to avoid adding an event for a particular resource with a start date/end date coming in this time slots (event overlapping). How to achieve this? Do you provide any inbuilt function for this validation which we can use or override? We will greatly appreciate if you can give us a resolution for this.