The LDAP integration allows users to use their LDAP credentials to login to workbench. The Workbench administrators can select the LDAP option in workbench while creating a user or group and add users from LDAP to workbench.
But there is bunch of configuration that is needed to achieve that. We will look out that config in this post.
Its always helpful to have some help from ES team for any complex LDAP queries.