I have accounts on Google Apps and Office 365.
I'd like to share a calendar with other people and allow them to make changes (add/edit/delete events) within iCal or iOS.
I don't care whether I use Google Apps or Office 365, whichever is easiest. So far I've been able to grant "change" permissions to a shared calendar in Google Apps but then am unsure how I should add this within iCal. If I add a new calendar subscription I can see the shared calendar but can't add events to it.
In Office 365 I can share a calendar but can't change sharing permissions (in OWA the permissions panel just hangs).