You can follow the usual WebSphere global security configuration procedure for enabling security in Lombardi Edition V7.2 with any LDAP server. If you are familiar with configuring security in WebSphere Process Server, the steps are similar. The most interesting task might be getting the LDAP server set up and populated with an LDIF file. Remember to work with a simple DN suffix, something that matches the enterprise’s domain.
If you are using federated repositories, remember that you cannot have the same user ID in two user repositories.