NBU - tracking configuration changes

Hello Forum, 

Is there a working method (or available NBU utils/logs, etc) to track who and when changes are made to a NBU environment ? 

Most NBU adminstration is done using the Java GUI, with remaining admin completed using the command line. The NBU admin su to root and then the auth.conf has all admins with the following config

 root ADMIN=ALL JBP=ALL
 * ADMIN=JBP JBP=ENDUSER+BU+ARC
 admins_name ADMIN=ALL JBP=ALL

We have NBU 7.6.0.3 on Linux Redhat 2.6