Load Test with reusing sessions

SOAPUI Gurus,

I want to run a SOAPUI load test, with 50+ threads, but only present as 5 unique clients.

That is, I want the load test to have 5 unique clients sending multiple simultaneous requests to the server. I believe what I need is for load test to reuse the same session cookies for the 5 unique clients, so tomcat on the remote end will treat it as the same client.

Is this doable?

tia,
rouble