The config file allows you to specify a full path to a folder or a "Special Folder" using the .net Environment.SpecialFolder Enum like "UserProfile". You can also specify a subfolder to be added to the derived special folder. This enables you to act on folders like C:\Users\richard.king\AppData\Local\CrashDumps\.
You can specify the number of days old a file must be in order to be archived. You can specify the number of days old the archive folder must be in order to be deleted. You can specify that only archive folders are deleted or you can have it delete any subfolders that are old enough to be deleted.
Please go through the user guide attached in the Documentation section to help you properly run this automation.