LDAP SFTP Server Configuration BizManager

I am able to configure LDAP for BizManager where it adds the domain dropdown on web application for logging in. I can login using domain credentials.

However when I try to test via SFTP into the message server it looks like I need to still enable something else to turn on LDAP for the SFTP server:

I see LDAP enabled false in the Server Logs:
INFO: LogonUser- Begin: User=[XXXXXXXX], Domain=[]. LDAP.Licensed=[true], LDAP.Enable LDAP Domain=[false], LDAP.User Authentication=[false], LDAP.User and Role Authentication=[false], LDAP.Local Login=[true]. [.config.clientitf.FuncUser]
INFO: LogonUser- Begin: User=[XXXXXXXX],OTDS Domain=[], OTDS.Configuration Name =[], OTDS.Enable OTDS Domain=[false] , [.config.clientitf.FuncUser]
INFO: LogonUser- fetch user from biz database: USERS.USERID=[XXXXXXXXX] => USERS.USERS_ID=[], USERS.USERS_NAME=[], USERS.USER_AUTHENTICATION=[]. [.config.clientitf.FuncUser]

Is there any documentation on enabling LDAP for SFTP Server within BizManager?