Thanks for the request. Currently there is a way to set this property through powershell for groups, but it only works for users in OWA. We have this in our plans for Outlook desktop as well and will be working on it.
An error occurred while saving the commentP Murray commented
It would also be useful to let Owners change the Default permissions for the calendar to Reviewer or Free/Busy w Subject & Location; not to mention the full-blown capability adding, changing and deleting permissions as we can do with a user, resource or shared mailbox.P Murray supported this idea ·