Hi, Michael.
Our plugins don’t have any membership-type functionality, except for Community Events, which can limit access to wp-admin based on user level.
Our plugin creates one master calendar, but you can create the appearance of multiple calendars by using Event Categories.
Examples:
There are additional methods and documentation at our Can You Have Multiple Calendars? KB article.
Note that this functionality is available in the free/core version of The Events Calendar. You would only need to buy one of our add-ons if you wanted those extra features (e.g. Map View from Events Calendar PRO).
Last but not least, we have a pretty great Refund Policy so you can buy one or many of our add-ons and thoroughly test them.
I hope this info helps. Let me know if you have any follow-up questions.