Not quite sure!!!
your guess is probably as good as mine at the moment... In the interview it was described as the galley operator as such... as it's an all business class service you will have a co-ordinator in each galley... As meals are on demand, pre-ordered entertainment and menu etc I believe it's the coords responsibility to ensure the pax receive what they want, when they want it... presume you will be responsible for 50 pax each and the silvercrew will deliver what you have prepared for them (plated up meals, warm bread rolls, 4 course dinners and the works, you know how it is!)
I'm just guestimating here, but thats the gist i got!