ORC Elastic Search Enterprise setup advise

Summary

Within Enterprise Recruiting and Candidate experience setup there are a number of fields which can be populated e.g. Search engine Tenant name. What are the setup steps and instructions?

Content

I have searched implementation documentation but cannot find anything documented to detail what the following fields should hold within "Elastic Search": 

Search Engine Authentication Endpoint URL Search Engine Tenant Name Search Engine Host URL Search Engine IDCS Client ID Search Engine IDCS Client Secret Search Engine IDCS Scope URL

Does anyone have any advise on the setup here or do you know where this is documented? Thanks :-)