In the Flutter Calendar, you can create a recurring appointment on
a daily, weekly, monthly, and yearly interval. The recurring appointments can
be created by setting the “recurrenceRule” property in the
“Appointment”. You can refer to our UG
documents to know more details about recurrence appointments in the calendar,
https://help.syncfusion.com/flutter/calendar/appointments#recurrence-appointment
https://help.syncfusion.com/flutter/calendar/appointments#how-to-get-the-recurrence-editor-field-values-from-rrule
You can create a recurrence rule based on the given recurrence
properties by using the “generateRRule” method from the calendar, Refer
to the below link for more details,
https://pub.dev/documentation/syncfusion_flutter_calendar/latest/calendar/SfCalendar/generateRRule.html