[CentOS] Samba Question

Greetings,

There is a requirement of Samba server with the following specification:

There are two groups: Designers, Draftsmen

The share folder hierarchy is Project-->Final

Now the Designers groups should have rw rights for Projects and subfolders

The draghtsmen should be able to upload only files (not folders) to
Final subfolder. They are not allowed to modify/delete anything
anywhere. They will not have any permission in project folder

any ideas?

Thanks and Regards

Rajagopal