I'm using Office 365 and Outlook 2016 and am trying to setup a shared calendar that is invite only where everyone who is invited can see and edit meetings. I tried setting up a group calendar and a team calendar, but anytime I tried scheduling a meetings everyone also had the meeting added to their personal calendar (which is not what I want). I guess what I'm trying to do is very similar to creating a new user account who would then shares their calendar so all everyone can view and edit it, but without adding a new user (since it would cost me an additional Office 365 subscription). Can this be done, and if so what are best practices for setting this up?