Enabling WS-RM on the response side

I am trying to figure out how to configure the following scenarios in
Tomcat5 + Axis2 + Sandesha2 environment:


In a request-response scenario:
1. Enabling WS-RM only on the request-side and not on the response-side
2. Enabling WS-RM only on the response-side and not on the request-side
3. Enabling WS-RM on both request-response side.

I also want to know how to get async ack for the response message when
response side is WS-RM enabled.

Can someone please let me know?

Thanks,
- Suvanan