Web Dispatcher Configuration

Experts,

We have installed Web Dispatcher on top of SAP PI 7.3 EHP 1 AS JAVA SP14. We have multiple server and each server is having multiple application servers. With this setup, we need to configure following four URLs for achieving load balancing.

http://host1:51100/XISOAPAdapter/MessageServlet?channel=:BC_ABC:SOAP_S_ABC_CREATE_ORDER

http://host1:51200/XISOAPAdapter/MessageServlet?channel=:BC_ABC:SOAP_S_ABC_CREATE_ORDER

http://host2:52100/XISOAPAdapter/MessageServlet?channel=:BC_ABC:SOAP_S_ABC_CREATE_ORDER

http://host2:52200/XISOAPAdapter/MessageServlet?channel=:BC_ABC:SOAP_S_ABC_CREATE_ORDER

It would be great If steps can be provided to configure these URLs in web dispatcher and create common URL.

Thanks in advance!