Often you have different type on account on your iOS device. In my case I have three mail account - work, Google and iCloud. All services have calenders. In our/my case you have to go into Settings -> Calendar -> Default Calender to set the right calendar as default.
I'm trying to find out if it's possible to automate this through Jamf, in our case we want the default calander set to the one related to our works mail account. Does anyone know if this is possible?
