We are currently working on a system to create calendars and appointments automatically using EWS and PHP-EWS. The calendar is created in the owner's mailbox, the permissions are set for every user able to access this shared calendar.
Now I was wondering if it was possible to add the shared calendar to every other users able to access this calendar automatically. We would like to do it without sending the email asking to share calendar.
Thanks for your help, it is really appreciated.