You can create a classification with File Services Resource Manager.
The first thing is to install File Services Resource Manager.
install additional features
The install took about three minutes and restarted the server.
open file server resource manager from the tools menu
The first thing is to create a property
I am creating a restricted property
Now if you right click on a document and select properties
You can see a classification tab.
From here you can see the classification that we just created and you have the option to apply it to the file.
Now the file has the classification of restricted.