hi all ubuntu 8.04 \ samba

I want at the opening share \my_host there was the directory in which will be catalogs with different rights (eg the user with the IP is allowed to write only in one directory)

example

\\my_host\folder
               --\folder1    -user_ip1 can write to folder
               --\folder2    -user_ip2 ....
               --\folder3

my smb.conf

[filials]
path = /var/filials
comment = No comment
;admin users = nobody
;directory mask = 755
;read only = no
available = yes
browseable = yes
writable = yes
guest ok = yes
public = yes
printable = no
share modes = yes
;locking = yes

[filials\user1]
path = /var/filials/user1
comment = No comment
;admin users = nobody
;directory mask = 755
;read only = no
available = yes
browseable = yes
writable = yes
guest ok = yes
public = yes
printable = no
share modes = yes
;locking = yes

what is write [filials\user1] so user1 was in the catalog filials