S3 Google Bucket access

Hi.

I saw a post regarding the S3 google bucket access, however I can't seem to see these settings in WinSCP 5.19.

There is an option to chose Amazon S3 and when trying I added googles api, but the interoperability settings in Google don't show Access Key ID and or Secret Access either.

Help please.

Best
Brad

See https://winscp.net/eng/docs/guide_google_bucket