Active Directory - Changing Bonita BPM authentication service

In 7.5 Community Version , to change the BPM authentication service, the documentation says “edit bonita-tenant-sp-custom.properties” , but this file does not exist
Where can it be found or can you explain how to do for changing authentication.service.ref.name to jaasAuthenticationService

thanks
Jean

This feature is only available in Bonita Subscription edition. You can identify such feature with the small note on the top of the page: “Note: For Performance, Efficiency, and Teamwork editions only.”.