Thanks for this, I have added the group, however it did not allow me to address a problem I having: I have a DS415+ which has a shared folder which allows read/write access for ~10 users over the LAN. Offsite I have a DS214play where the same folder in synced with BT sync. In addition there is one laptop that uses BT sync to stay in sync with the server from remote locations. In the main everything works as expected, however any files/folders which are generated from the laptop and as such are created by the BT Sync user on either synology are read only for all the other users. Obviously all the users concerned have read/write access to the sync folder. The only way around this that I have found is make all users a member of the admin group and then restrict their access on a per folder basis. Clearly this is not a great solution, so if anybody knows what can be done about this that would really help. After following the instructions on this thread I can now modify the permission of the synology group, but adding users to this group does not solve the problem.
