Our IT support hasnt been much help, but anytime we want to create things like share mailboxes or shared calendars (like an org-wide calendar to show things like events and PTO) they would just create new user accounts in Office 365 and then change permissions on the mailboxes and calendars so people can access them.
But we recently transitioned to Office 365 and because of that we get SharePoint. I know enough about SP to know that when creating a Team site, that site gets some Office 365 features like a calendar which is great. I could create a team site add everyone as a member to it and BOOM, the group calendar is automatically added to their Outlook. BUT apparently we cannot do that, the current root site is a "communications" site and I cannot replace it with my newly created team site because "This site must be a team site or communication site. It can't be connected to a Microsoft 365 Group."
So If I cannot use this team site as the root, does that mean that we have to use some random user account for the calendar?
Also - How does one even display a calendar view on Sharepoint? There doesnt seem to be any sort of support for that which is weird because it seems like such a basic feature.