Hi, funinjerusalem. Great question! 🙂
It looks like you may be using some kind of third-party plugin to add that functionality to posts. Because TEC uses custom post types, the developer would need to extend that functionality to CPTs.
Admittedly, it looks like this is a bit outside the scope of support that we can provide here on the forums. While we are definitely able to help people with simple tweaks when they arise, something like this would be on the developer of that third-party plugin to provide a way to extend it to custom post types like our events, and as a result, the best we can offer up is to try and point you in the right direction towards our Technical Documentation and the Themer’s Guide. If your developer isn’t able to assist, it might be worth looking for a freelance developer on WordPress’ Jobs board of Freelance Switch, if you’re in a pinch. Apologies that we couldn’t offer up more and thanks.
Sorry I can’t be of more help!