How to trigger a function call after a bucket file create event?

Trying to trigger a python function when a new file is created in a bucket called 'recordings'. The most relevant option in the function settings is shown in the attached image. How can I specify which specific bucket would trigger the event?, something like this:

buckets[recordings].*.files.*.create

What does it mean that the event is triggered for 5MB chunks? My files are a few kilobytes each. I'd appreciate any clarification on these issues.

Did you read https://appwrite.io/docs/advanced/platform/events?

And my files are a few kilobytes each. I don't understand the 5MB chunk threshold that would trigger the function. If the file is bigger than 5MB, the function will trigger for each 5MB chunk

Thanks @Steven. The attached image comes from the same page. But I think I figured it out. It wasn't clear to me that I could edit the string in the Function settings and replace the first * with my bucket ID.