The permissions control ''drive'' (embarking as commander), ''mount'' (embarking as a passenger), ''accessing the inventory hold'' of the cart and ''managing the settings''.
Each of these rights can be granted or denied to ''all friends'', ''all villagers'' and ''everyone''. The owner always has all permissions. <span style="color:red;">'''The settings only take affect if the cart is locked, however.'''</span>
The owner of the large cart can attach a [[large padlock]] to it to enable permissions. The lock can be removed by everyone in possession of the key, but only the owner can attach it again.