Well how are users and PC numbers distinguished in your LDAP? That's the question. If you know that, you can adapt the query expression "(&(memberof=CN=BIUsers,OU=BIUsers,DC=CORP,DC=NET)(sAMAccountName=*)(objectclass=user))" to match your actual LDAP and only retrieve human users rather than just objectclass=user which seems to mix humans and machines from what you're describing.
Thanks for your quick reply.
I need to restrict in EM. In colsole its lising only the users which is reside under BIuser.
How can i restrict in EM. Please guide me regarding this.
EM will pull every single user instance it finds in any of the security providers over your security realm. The place to constrain is there. You have no way of "configuring" Enterprise Manager to display "a constrained list".