Hi @nicknagle
Thanks for your message and patience on this.
If your theme offers a page template with a sidebar, you can change which page template is used for the Events pages in Events > Settings > Display > Events template. Additional templates that show here are what your theme provides. If your theme does not offer a page template with a sidebar, you would need to create one and add it to your child theme. Then it will show up in this list.
If you need more information about creating a custom WordPress Template, check out this link: https://www.ostraining.com/blog/wordpress/custom-sidebar/
You can also modify and create custom templates for the Events templates as well. You can read more about that in our Themer’s Guide. Then take a look at the Single Event template here
Hope that helps! Please let me know if you have any more questions about this.`
Thanks
Rob
TEC