If you go to server/resources/config.json you can edit the equipment types there. Here is an example of several types I have added.
 },
 "Equipment": {
   "WeaponSlot": 2,
   "ShieldSlot": 3,
   "Slots": [
     "Helmet",
     "Armor",
     "Weapon",
     "Shield",
     "LHand",
     "RHand",
     "Boots",
     "Gloves",
     "Neck",
     "Back"
   ],
