Documents of Record - Remove the ability to add documents

Content

Hi all, 

I am looking for a way to remove the ability to add documents from employee. We only want HR to add documents and that can be only viewed by Employee in Personal Information -  Documents of Record tab. 

I tried following

a) Remove Manage Person Documentation by Worker duty role from the employee role.. The Documents of Record disappeared 

b) Then created a new duty role and added "View Person Documentation" PRIV to the employee role. The tab appears but it still has the plus sign to add documents... Thanks.