Hi, Michael.
Thanks for your interest in our plugin suite.
Our plugin creates one master calendar per site, 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.
However, if each calendar will be standalone (i.e. events not shared with each other’s calendars), you actually might be able to accomplish this via a WordPress multisite setup.
You might also be interested in our Community Tickets solution (although you’d need to get approved for PayPal’s split/adaptive payments before being able to use it).
Please let me know if this clarifies things for you. Sharing additional use case specifics might help me advise you more specifically.
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.