first of all sorry for my bad english :). The Advanced Folders have the nice option, to change the permissions for the devices once the folder is created and shared. I use 2 Android devices and 1 Windows computer. On Windows there's the option to chage the permissions of the Android devices, on Android, I can't change them, basically I can't create Advanced Folders. The only possibility is to create an Advanced Folder on Windows and share it with the Android device.
Also, why can't I change the permission from my Windows computer? It's always Owner and can't be changed to Read Only.