S3 backup into subfolders?

Hi.
I have created a bucket for S3 backups, and that seems to work fine.
But I was thinking it was more logical to create folders for each instance within that bucket
One folder for Valheim, one folder for Enshrouded, etc.

But how will the configuration look like?
Adding the folder name to the S3 bucket name (amp-bucket/Valheim_backups/) doesn’t seem to work

Thanks

I’m not sure if you can with AMP’s current impl.
For example, AMP can’t upload to already existing buckets. The S3 plugin is in need of a bit of an overhaul.