So I've been helping out in a few restaurant kitchens in Chicago these past few months, just on my off hours, to learn more about cooking, the industry, etc. I know the Chef partner is to be addressed as "chef" but below him were three other guys. Based on other threads here, I think they would be sous chefs (i.e., in charge when the Chef partner was not there). They would all assign me different tasks to do or give instruction. To be safe, I just said "yes chef" to all of them. I may not have been correct but I felt funny addressing them by their first names, which they all gave me the first time we met. Did I commit a big faux pas?