Customize format for folders containing only folders as a file type

Help & Support
1

Hi. I keep searching but can someone confirm it is possible or not to customize format (columns in particular) for folders containing only folders ?
Thanks

2

Setting a format for folders that only contain folders is possible with an event. However, it doesn't seem to be possible with a Folder Format (Preferences / Folders / Folder Formats) or via File Types (Settings > File Types).

3

Thanks. I'll look into that.