Setting server side encryption for Amazon S3 file transfer

I'm attempting to transfer files to an Amazon S3 bucket using WinSCP. The bucket requires the file transfer app to set encryption as "SSE-S3 (AES-256)". Where in WinSCP can I set this? I'm using version 5.15.2 (Build 9590)

WinSCP does not support this.

You can set the default encryption for the bucket.
https://winscp.net/forum/viewtopic.php?t=27097#88929

Though I see that you do not have a control over this.
https://winscp.net/forum/viewtopic.php?t=27097#92679