We wish to not allow access to Cases marked as "Sensitive" to People in Roles above the owner of the case in the Role Hierarchy.
e.g. Bob is trained on sensitive data, and his Manager Sue is not, so only Bob and the sensitive Group of users can see this sensitive Case.
When trying to turn off Grant Access Using Hierarchies for the Case object, it is greyed out.
Can we, How can we turn this off?
This question is not to answer the XY problem of how to restrict access. It is asking: "Can we turn off Grant Access Using Hierarchies on the Case object or other Standard Objects that are greyed out"
Keywords: Account, Contact, Opportunity, Lead
I realise this is an XY Problem so I write this for the purpose of Google search, and for the very direct answer that will come.