Hi Chuck,
Thanks so much for reaching out and for your interest in our products!
With Community Events, you can allow users to add and submit events on the front-end of your WordPress site.
You can create a member-only calendar using the following tutorial:
https://theeventscalendar.com/knowledgebase/making-members-calendar/
In addition, if you’d like to use our products on a non-WordPress site, you may be interested in our product, Loxi, which can integrate an events calendar on a variety of sources, including Squarespace.
Let me know if you have any other questions!
Thanks,
Jaime