I'm trying to help someone who uses Office 365 at work with a Mac. Right now, she has to use the official Outlook app on all of her devices (MacBook, iOS, Apple Watch, etc.), but she'd like to be able to use the native Apple apps instead. This seems to work fine for everything except for shared calendars.
On the Mac Calendar app, you can set up delegate calendars easily, but I don't see a way to do that on iOS. Is there a way to view a shared (non-public) calendar on iOS?