Folder permission macmini server 10.6.8 help

I own and run a small office, and i've just changed from a windows small business server who worked rocksteady, to a new mac mini server 10.6.8, because most of us use mac's.

I hired a macsepsecialist to configure and set up the server for the 6 of us. He has tried to solve our problem for 3 months now, and we still have the same problem.

When one of us creates a new folder og file inside a projectfolder on the server, it should get the same permission as the projectfolder so it is accessible to all of us. This was no problem on the windowsserver. This does not happen on the macminiserver. Only the guy who creates the folder get access. All the rest of us is denied. So far have I used a program called batchmod to fix it, but it takes time everyday to fix it.

In the workgroupmanager its like this :

8 users with UID from 1025 - 1032 belongs to three different groups.

1. "Alle" GID 1026 - user A,B,C,D,E,H

2. office GID 1027 - user A,B,C,D,E,F,H

3.Workgroup 1025 - A,B,C,D,E,F

The path for the folders on the server are : Server HD-Users-admin-my office-projects

The permission in the ServerAdmin to the folder : my office is:

ACL: "Alle" - allow-fullcontrol- this folder,child folders,child files,all descendants

POSIX: " Alle" - allow-read &write-this folder

On my workstation, in "the get info window" for the "my office" folder, the permission is :

--

If I go down one folder to the projects folder inside the "my office" folder

permission in the Server Adm program :

ACL

POSIX :

admin-allow-read&write-this folder

staff- allow-read&write-this folder

others-allow-read&write-this folder

On my workstation, in "the get info window" for the "projects" folder, the permission is :

-unknown - read and write

com.apple.local.ard-reports-read and write

everyone-read and write