If yes, where can I find documentation on how to use/enable it?

https://tools.ietf.org/html/rfc3112
The userPassword attribute type [RFC2256] is intended to be used to
   support the LDAP [RFC2251] "simple" bind operation.  However, values
   of userPassword must be clear text passwords.  It is often desirable
   to store values derived from the user's password(s) instead of actual
   passwords.

   The authPassword attribute type is intended to be used to store
   information used to implement simple password based authentication.