Thanks Colin,
I know i can make limited access with forms , but professional users can open table directly and change data in it.
With a secure workgroup all of table / query will be included in the same access level , but i want to make different access level for tables in a same access data base.
for example :
level1----------->[Table A : Data Entry],[Table B : Only view]
level2----------->[Table B : Data Entry],[Table A : Only view]