How to use and configure BPM worklist

Summary:

I would like a document like a user guide or implementation guide for BPM worklist

Content (required):

I know the basic setup for BPM worklist. I need a document about how to use the advance feature of BPM worklist. Please refer to the attachment. How to use call, expression, etc.

Version (include the version you are using, if applicable):

23B

Code Snippet (add any code snippets that support your topic, if applicable):

NA