Website
First, login to Company Admin Area. Only Company admin can see this button.
Go to Company Inspections > List
1. Edit list name
Click icon 
to edit List Code.
2. Edit list Items
Click Edit List Items.
Click icon to edit item.
3. Add List Items
Click Add List Item(s) at the top
Note that you can only rename items, you cannot delete items and cannot change the item sort order.