How do I allow members in a shared Calendar see other members?

I have multiple shared calendars for different groups. My wife is included in several of those groups. She wants to add a calendar entry but she can’t see the members included. She can only see that I am the organizer. How do you allow the members of the group to see who is included?

Also, as the group originator, does everyone have the same calendar name I name it or each member can name it locally on their device?

[Re-Titled by Moderator]