You'll have to change your food settings under General Settings > Enter advanced settings > Food / Drink This is what you are looking for.
If by create you mean if he buys food and drinks, you'll either have to put it in there or use this plugin Butler. And add, under "Enter advanced settings" > Vendor (Selling or Buying) put the Amout of Food/Drinks you want him to buy.
Else, as a mage, to conjure food and drinks, you'll have to add that in your fightclass.