duty assistant

A person employed by a shopping complex who (according to management) only walk around the centre doing nothing else but talking to retailers, walking around in pairs and moaning about the higher management because they want their staff to become uniform and robotic. They are often unkempt with manly beards and/or eccentric hair styles.

There goes that duty assistant talking to the ice cream stand staff again, he/she has been for 20 seconds and that's far too long. Why are we employing these people?