Hi Sam,
Thanks so much for reaching out!
There isn’t really an easy way to achieve that functionality out of the box. As you’ve found, you may be able to edit the template you are referring to in order to get close to what you are looking to achieve.
You can also add in images on the backend with the addition of a third-party plugin photo gallery plugin.
If this functionality is a requirement for your intended project, I’d suggest that a third-party developer would be the best way to make this feature happen on a short timeline. ? We maintain a list of developers who work with our plugins on our Knowledgebase here:
https://theeventscalendar.com/knowledgebase/find-a-customizer/
You can also add this idea to our Feature Requests, as we tend to implement ideas based on customer feedback, so your input is greatly appreciated:
https://tribe.uservoice.com/forums/195723-feature-ideas
Let me know how it goes and if you have any other questions along the way!
Thanks,
Jaime