The machine hot folder function is a function for direct printing files such as PDF and TIFF files without having to launch the application.
On the HDD, simply create a folder configured with job settings, and then copy the files into that folder to print jobs with those configured job settings. As the job conditions are configured in advance, there is no need to configure the print conditions for each file.
Furthermore, folders set on the HDD can be accessed over a network by multiple users. All files copied to a single folder can be printed using the same job conditions.