This section describes how to restrict access to Apache Zeppelin notebooks by granting
      permissions to specific users and groups. 
      There are two main steps in this process: defining the
            searchBase property in the Zeppelin Shiro configuration, and then
         specifying permissions.- 
            In Zeppelin configuration settings, the Zeppelin administrator should specify
                  activeDirectoryRealm.searchBaseorldapRealm.searchBase, depending on whether Zeppelin uses AD or
               LDAP for authentication. The value ofsearchBasecontrols where
               Zeppelin looks for users and groups.For more information, refer to "Shiro Settings: Reference" in this guide. For an
               example, see "Configure Zeppelin for Authentication: LDAP and Active Directory" in
               this guide. 
- 
            The owner of the notebook should navigate to the note and complete the following
               steps:
            
               
                  - Click the lock icon on the notebook: 
 
- Zeppelin presents a popup menu. Enter the user and groups that should have
                     access to the note. To search for an account, start typing the
                           name.Note: If you are using Shiro as the identity store, users
                        should be listed in the [user]section. If you are using AD
                        or LDAP users and groups should be stored in the realm associated with your
                        Shiro configuration.
 