Creating a team
To be able to claim areas and allow other access to your claim, you need to create a team.
Open your inventory and click on the “My Team” icon in the top left.
Create a new team, name it and pick a color. Afterwards you can customize some optional team settings or close the menu.
Creating a claim
After you made your team you can start claiming, simply open your inventory again and click the “Claimed Chunks” icon in the top left.
Then simply left click the area you wan't to claim on the small map.
Chunkloading a claim
Simply hold SHIFT and left click the area you wan't to chunkload on the small map.