Resolved! I was able to add the shared calendar as an attendee by creating as a new contact in Odoo. Now all events it is added to appear in the shared calendar! :)

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Hello, I was able to successfully sync my Odoo Calendar with Google Calendar, as my own personal user. I can create events in Odoo and they show in my personal Google Calendar. I can also create events in my Google Calendar and it appears in Odoo. 

My problem is that we have an internal "Events" calendar shared at the organization level in Google. There is no single user who owns the calendar. 

How can I have events created in Odoo appear in the company Events shared calendar? How do I also make the distinction between Odoo users' personal events and those they want to add to the shared calendar? 

Example, User A has a client call with ABC and doesn't want to add to the company-wide calendar.

But User A also has a Big Client Event and wants to share it with the entire company. 

I thought maybe adding our organization as the attendee could work but there is no corresponding calendar in Google.