Sorry for the slow response. We indeed have such a feature, it is not well documented. You just need to create a config file in your wwwhome folder named webhosting.config. The file content should be as follows:
# If a URL's destination file does not exist, it shall report 404 error message directly if 404RedirectURL = 404
# you can specify a redirect URL; otherwise, it will use the default handling.
404RedirectURL = 404
# If the value is true, then it means it supports folder browsing for all subfolders;
# allowBrowseFolders = true
# If you want to enable folder browsing for only a few subfolders, then use the following value: SubFolder1|SubFolder2
allowBrowseFolders = SubFolder1|SubFolder2