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"
],