Your first question belongs on a SOAP UI forum, not PSC. We do not provide guidance on the use of 3rd-party software.
I do not understand what is being asked in your second question. There are a number of ways to unit test your SOAP service within Designer Studio. Under the actions menu, you can use Run to open a unit test dialog. Refer to online help for information about its options. If you want to trace incoming requests from external sources such as SOAP UI, select the Trace option from the actions menu on the SOAP service rule.