Click Start, point to Run, type Regedit in the Run box, and then click OK to start Registry Editor.
2. Locate the following key in the registry:
3. On the Edit menu, point to New, and then click DWORD Value.
4. Name the new value ShowSecurityPage, double-click the new value, type 1 under Value Data, and then click OK.
5. Quit Registry Editor. The ShowSecurityPage value causes Exchange System Manager to display a Security tab on all configuration objects. If the ShowSecurityPage value is not present, or if its value is set to 0, the Security tab is available only on Address List objects, mailbox and public stores, and top-level public folder hierarchies.
6. In the Microsoft Exchange program group, click Exchange System Manager.
7. Right-click the organization object, and then click Properties.
8. In the Properties dialog box, click the Security tab.
9. Under Name, click Administrator, and then, under Permissions, examine the individual permissions that are granted.
10. Click Enterprise Administrator to see that this security group has inherited Full Control permissions for the organization.
11. Click OK, and then quit Exchange System Manager without changing the security settings.