WPC Area Permission

Hi Folks,

We are running on SAP Netweaver Portal 7.4 SP 4.
We are facing issue with permission on the WPC Area's.
From the "Content Editor" of the "Accessible Area Management", we are setting the permission for the Area's.
Now we have scenario like the below:
We have Area A  with Read / Write Permission for Users A& B.

Inside Area A, we have sub folders to store documents. We want to give the Writepermission only to User A.

Is that possible?  Kindly help me in this regard.

Regards,

TSB