[Samba] Changing shares permissions

[Ong Chin Kiat]

Hi list,

I have a new install of Samba 4, and was wondering how I can define file
access permissions (read/write etc).

testparm and samba both reject the use of 'writeable' and 'valid users', so
I'm quite stuck as to how the permissions can be set.

I have tried using the Remote Administration Tools (specifically Computer
Management) to try and define the permissions for the shares on the file
server, but they throw back a 'Access Denied'

Cheers.