This trigger allows you to await any render that was created programmatically in your project.
You probably won't need this trigger if you're creating a single render per Zap. If you use the Create Single Render action, the rendered video or image will be available immediately in the following Zap step.
When you configure the trigger, you can choose which tags and metadata it should trigger on. Leaving these fields empty will make the trigger run for every render in your project.