Multiple queries can be created at the same time. When finished building a query, click Save Query in the right hand sidebar. A generic name Table (1) will be assigned. Click the pencil icon to change the name of the query.
Create another query
Click the New Query button in the top toolbar. The Unify BI workspace is cleared out, and the next query can be constructed.
To return to a previous query, click the query name in the right sidebar.