Please add the option to require a minimum number of participants (0, 1, 2, etc. with a default of 1) in each role on a 'setup participants' task so that users actually setup participants before completing the task. It's very easy for users to skip setting up participants and mess up the workflow. The error message should display to users before being allowed to 'complete task'. See the related discussion here: https://community.ptc.com/t5/Windchill/Windchill-Workflow-How-to-Require-Users-Actually-Setup/m-p/69....
