From: Amazon, Brazil
I think this is what you´re looking for:
Another thing you can do with path statements is redirect to different servers based on a path statement. For example, take the following URLs:
All three URLs point to the same FQDN and only differ from in the path. You can create three Web Publishing Rules, each one using the same Public Name and each one including a different path configuration and a different server on the To tab. When a users makes a request using one of these three URLs, the request will be forwarded to the appropriate server based on the settings on the Public Name, Paths and To tabs.