Our current website allows user to download an ics file which can be used with outlook. We have been receiving increasing requests to be able to modify or update an individual appt in the series, and would like to provide that functionality. We are currently able to create the ics file with the appropriate content, the link below indicates that we can delete but I do not see any options to update an existing appt.

Any thoughts, examples, etc on how to accomplish an update?

reference we used for create

https://msdn.microsoft.com/en-us/library/bb386291.aspx

Thank You in advance!

Derek