Looking for a Deep dive Reference guide for Volunteering and Mentoring Modules

Summary:

I am looking for some deep-dive reference document that could explain more about "Volunteering" and "Mentorship Skills" functionalities. I went through the docs.oracle.com site and the materials provided there is not much help to understand these modules.

Content (required):

If you have come across implementing these 2 modules and any useful references with screenshots and procedures or any training Videos, that will be really helpful.

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

21D

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