Have one process create an instance of another process.

    <node name="launch order process">
        <action class="com.xxx.workflow.LaunchProcess" config-type="bean">
            <definition>orderprocess</definition>
            <propogate>itemID</propogate>
            <signal>true</signal>
            <leave>true</leave>
        </action>
        <transition to="end"></transition>
    </node>