Hi Chris,
Thanks for reaching out! While we don’t offer any built-in settings for changing the display of our event tooltips on the default Month View of our calendars, you can modify the content that’s displayed inside each tooltip by customizing our plugin templates. Our Themer’s Guide contains all the information you should need to get started with duplicating and modifying templates:
https://theeventscalendar.com/knowledgebase/themers-guide/
To change the content of our event tooltips, you’ll want to look for the tooltip.php template file, which is located at /wp-content/plugins/the-events-calendar/src/views/month/tooltip.php when navigating from your WordPress directory.
I hope that helps to get you started here! 🙂 Thanks again, and please don’t hesitate to follow up if you should have any other questions!