Hi Jared,
Thanks for reaching out! The month view of the calendar should show past events by default. Is this not the case on your calendar, or are you referring to a different view? You can also find past events at [your-site]/events/past, or the “date” parameter in the shortcodes can be set to any date in the past, which will then display all events, past and future, from that date forward.
To include past events by default in other views, you could do a customization. Our themer’s guide is the place to start if you’d like to give this a shot! We also have a list of recommended developers that you could contact if you’d like to get help with the code.
I hope that helps! Please let me know if you have any questions.
Thanks,
Jennifer