From the Developer Portal you can create, edit and configure your Worlds
Click the New World button at the top right of the Worlds view in the Developer Portal.
To create a World:
Enter a unique name
(optional) choose an SDK version. The latest version is recommended, but this should match the SDK version installed for your project
Enter tags separated by commas
Choose which region the World should be started in
Choose the size of the Replicator
(optional) Choose the schema this World should start with. Usually the latest schema uploaded is the preferred choice, and this is the default.
See the chapter Schema reference to get more information about how to configure a schema.