On Windows®, you can create brokers on the command line or by using the Command Assistant wizard in the workbench.
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 you create specifying the same database and database user ID share these tables.
To create a broker: