Need to support for the functionality which is In calendar, when click past or prev button, fetch the data(AJAX call) if I choose every 3 months or 6 months or 1 year it will give respective months of data. I have tried many times but can’t able to finish that. Is anything you have predefined functions for this requirement? If anything else please let me know or give a idea to accomplish this task. Have to set the date in scheduler.init() or not?