Difficulties integrating custom BPM workflow in SaaS ERP

Summary

Can we use the BPM Worklist for custom workflows?

Content

We would like to create a new custom workflow in our Saas ERP solution. The custom workflow should leverage the same BPM worklist and notification enginie as the standard application workflows.

By using the Application Composer in SaaS we can create custom object and configure object workflow. Also managed to access the BPM Process Composer and able to define and deploy a custom project/process. Created a custom object to trigger the custom process workflow.  But nothing happens when I test by creating a new record in my custom object.  The process does not seem to be fired. Expected a notification and/or entry in the BPM worklist and/or entry in Transaction Monitor.