Restrecting user in samba share

[mvr]

Hi,

I have setup a new Samba share for our executives. They will be members of "EXC" group on a HP-UX11i server. "EXC" group has RWX rights for this share. Others do not have rights at all.
I need to setup couple of managers to be able to save the files in that share (folder), but they should not be able to read any of the files.
This is a part of our smb.conf:

[exc]
comment = Executive Data
path = /samba/data/at1-dep/exc
valid users = @exc @ntadmin
create mask = 0750
directory mask = 0750
browseable = No

Could I add another group in here and give them just a "file save" permission?

Regards,
Miro

[RAC_1]

check setting as "valid, invalid users"

[mvr]

I am not sure what do you mean by your comment. If I specify "Invalid" users, they wouldn't be able to access at all, is that correct?

Miro