Claims are a feature on our server that allows users to protect their lands. When you claim an area people cannot open chests, interact with doors or animals or break blocks. To claim an area, hold a golden shovel in your hand and right click the corner of an area you want to claim. Then, go to the other corner and right click the ground. If you have done this correctly a message in chat will tell you.
As you progress on the server, you will get more claim blocks, which will let you expand your claims
You can get claim blocks via rankups or staying online.