Hello,
There are a couple of ways that you could do this, one being using the [tribe_events] shortcode and setting the date parameter to a date in the past – all events from that date forward will be displayed.
Alternatively, you could edit the template for the organizer pages (found at wp-content/plugins/events-calendar-pro/src/views/pro/single-organizer.php) by following these instructions and using the tribe_get_events function to pull in a list of past events for that organizer.
We are a bit limited in the amount of support that we can provide for customizations like this, but if you get stuck with the code or have any questions along the way, please let me know! I’ll be happy to point you in the right direction.
Thanks,
Jennifer