Let's be honest and state that BPA Workflow is not the easiest to setup in IFS Cloud. I still do learn a lot and have, I think, only 20% under my belt of knowledge. To help you out that reached out to this page (thanks for that), I hope that the steps I made can help you get more grip on your own problem with BPA.
I share with you settings that I'm working on (really a work in progress). It includes a description and the workflow as it is now.
Please let me/us know if something is missing or should be extended.
(BPMN file that is attached has txt as extension (due to security), rename once downloaded with .bpmn)