3160003 - Using Web services in Workflow Accelerator

I am looking for a way by which I can add a web service to the tasks of the processes that I create in Workflow Accelerator.  In the company that I work for, there is a complex process and in some points, we need to complete the tasks using other services.  So, I want to connect those services to the process in a way that when the user reaches the task (configured with that service) can easily access that service as well and any update on the service reflects in the process created in Signavio too.

At the moment I am trying to test everything with free web services that are available on the internet.  But I couldn't find any guide on how I can configure web services in Signavio.

KBA , BPI-SIG-PG-EDT , Process Governance Editor , How To