Configuring APEX to use BI Publisher

Login Administration Services home page -> Manage Service -> Instance Settings -> Report Printing

Print Server: Advanced
Print Server Protocol: HTTP or HTTPS (depends on your configuration)
Print Server Host Address: the hostname for the machine where you installed BI Publisher - e.g. myhost.mycompany.com
Print Server Port: the port given at the end of the BI Publisher installation - e.g. 9704
Print Server Script: /xmlpserver/convert