I ran a server previously, and will be running another server in about a week. My friend and I are figuring it all out beforehand. We want to know if you can make it so certain items are available to certain permission groups. We will be using the Races mod so people can choose between custom options. These won't just be a tag in chat. It will have real effects. They will have different kits, and powers. We will also be adjusting some items to be better or worse, depending. The main idea though, is that certain groups can only build certain things, like one group won't be able to build steel armor/weapons at all. Or not be able to build Tier 7 blocks at all. Is this possible? To make items that have special permissions?