Q:

View attendees of a meeting which I already accepted in Outlook 2016

How can I see who is attending a meeting to which I have already accepted an invite to ?
I can see who the invite is sent to before accepting, but not after. 

I can see the times etc and the organizer, but not the other people in attendance.
I have tried double clicking the event, cannot see any options or information on attendees.

A:

Peter, you can just open the event, and click the Scheduling Assistant button in your second screenshot to view other attendees:

A:

If you have Outlook Social Connector, you can see meeting attendees via the People Pane:

To open the People Pane, click on "View > People Pane", and then "Normal" inside the main Outlook window.

