Hi, there are a couple of main ways that this could work. A number of companies end up buying the equipment, paying for staff training and then let staff make their own drinks. You can then have fun events like latte art competitions as well. Other main option would be as you mentioned - have a barista making the drinks. Both options are viable, but being a "coffeesnob" that has worked in mutiple places that had espresso equipment I prefer the 'make my own' approach. Its more fun, and the company doesnt have to pay a barista.