Restrict permissions to a user to search only few users who is part of a group.

Hi,

     In FIM Portal, I have a security group "Group1". The group contains 5 user accounts(User1,2,..User5). The user account "User6" is the owner of that group "Group1". Whenever the owner of group  i.e."User6" logs into FIM Portal, on "users" page he/she should be able to search only the memebers of that group "Group". When the user "User6" clicks on Users link in FIM portal, and searches for the users, then he should be able to view only the users "User1,2...User5" but not all the users.

How can i achieve this scenario. Please suggest.

Thanks,

Prasanthi