I'm trying to test this feature under Shop Floor Workbench but it is always greyed out. I've tried looking at Help and it implies you would RMB-Assign... but there must be some pre-requisites that aren't defined in the F1 Help. The AppOwner never sees this option so I don't think it is a security issue. There seems to be some link to Competency - which we do not have setup - but it doesn't say this is required to use it.
Go to Shop Floor Workbench, Enter As an employee with SFW access, RMB on any operation but Assign Employee/Team to Operation is grey..