Maybe you have to run the "load-patch-content.nsh" script again and just select the third option "3. Create AIX Property Instances only."
I just did this installation in my test-environment first selecting the first option - which of course should create this property classes. But nothing appeared in the CM. Then I ran the script again only selecting the third option. After some error-messages regarding already existent Workspace-groups the property classes were created.
After you have your property classes you can also see the reference to bff_root ;-)