Hi, it depends on which controller you use to operate the device. I assume you are using the Canon "CanoScan Utility" software supplied. I have ticked the box you mentioned. In my Windows folder "Pictures", the subfolder mentioned is then automatically created for each scan for the respective day, e.g. with the name "2025_11_13", and the images are then stored in it with the name according to the selectable setting, in my case "IMG". If I make several scans on the same day, then they are in the "day folder" and have the names e.g. IMG_0001.pdf, IMG_0002.pdf etc.. You can then rename these files as you wish. - The current date is given to the subfolder, not to the file. - I find this categorisation great, so I can easily find my way around my collection of more than 800 scans (since 2011).