On Windows, you can create brokers on the command line or using the Command Assistant wizard in the Message Broker Toolkit.
When you create a broker, if the WebSphere MQ queue manager does not already exist, the queue manager is automatically created. The broker database must already exist but the tables in which the broker stores its internal data are created automatically when the first broker to use that database is created. Subsequent brokers that are created using the same database and database userid will share these tables.
To create a broker: