The Query List pane displays all of your private and public queries, as well as any public queries created by other users in the depot. (A public query is a private query that the query author has made available to all users in the depot. All queries you create are private unless you explicitly make them public.
Your queries (both private and public) appear in a folder with your username. Different icons are used to distinguish your private and public queries. Public queries created by other users appear in a folder named Public. By default, queries are listed in the order in which they are created, but you can move them using the Move query up and Move query down buttons.