Service Redwood - Unable to make Status and Queue fields as Read Only

Summary:

Hello,

I have a simple business rule on the Service Request — I want to make Status and Queue fields as read-only for Customer Service Manager users. I was able to do this for other fields but it seems the business rule is not affecting these two fields.

Is there a restriction on these two fields or am I doing something wrong?

Content (please ensure you mask any confidential information):

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

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