How can I input event name?

First of all, I’m sorry that I’m really a noob of the GA and GTM thing lol! I’ve used your plugin to track the Elementor Form Submit from GA. So I used these settings: https://prnt.sc/iY_FtH8yGxUy

One thing I cant understands that, in some code, I can see the event: {event_name} is a first value. I’m talking about this: https://prnt.sc/D4NKZWLU8GlE

But in your plugin, I can’t find to input this event. How can I input this if I use your plugin?

Thanks!