The easiest way to create a crawl would be using the ticker wizard (in the browser window in Maestro, not in PageEditor) to create a ticker template. There you will be able to drag and drop the results of a data source query to each one of the columns in the ticker.
If you would rather create a normal page, you can drag and drop a the results of a data source query to a single control, and either use the autoadvance option in the send export event in the timeline, or create script to control how and when the next result will be displayed.
You can find detailed information in the Maestro User Guide in the install folder of Maestro
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