@DudeNamedBen if u use periodic notes plugin, u can define the file path for the daily (or weekly, monthly… notes). For Ur case I think the following format would work YYYY/YYYYMMDD`
They say they want the full date in the subfolder, so I think the Daily Notes > Format should be YYYY/YYYYMMDD/YYYYMMDD according to their request.
I would argue that it’s better to do the last part as YYYY-MM-DD since then the “number sequence” would be properly recognised as a date, which the format “YYYYMMDD” in most cases wouldn’t be.