How to configure LDAP in Tomcat and BPM

Hi,

I am able to use default setup tomcat-users.xml to handle users login. Now we need to configure server.xml to connect to LDAP Active Directory server. I could not find any documentation related to this topic. How can I tell business-central/dashbuilder/kie-server to load LDAP setup. Help please. Thanks

BPM 6.4
Tomcat 8

Yung