The available export to ICS file functionality in RadScheduler exports all appointments. Filtering is not intended to be supported.
If you want to export just a specific subset of events, it is necessary to use a dummy RadScheduler, populate it with the desired appointments and export this dummy scheduler.
Alternatively, you can implement your own export logic: https://docs.telerik.com/devtools/winforms/controls/scheduler/importing-and-exporting-appointments/export-to-a-custom-file
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Dess | Tech Support Engineer, Principal
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