Hi Mike,
Thanks for the interest in our plugins.
We do not have capabilities setup the way you describe in the plugins.
On the front end any visitor can see all the details of the event.
It is possible to customize it to show only certain details based on a role and we have the themer’s guide for that:
https://theeventscalendar.com/knowledgebase/themers-guide/
Also, we do not directly show on the front end number of attendees and list of attendees by name so that would have to be added as a custom function to show.
In the admin we follow the roles for viewing details similar to what WordPress has for posts.
You can test this out with the core version of the Events Calendar found for free on WordPress.org: https://wordpress.org/plugins/the-events-calendar/
Let me know if you have any follow up questions.
Thanks