To set up Music 1 to output a log for DCS, Maestro or XStudio, the user needs to set the Automation Log Format to DCS, and set the Automation Log Directory to the folder where the logs should appear. This second step can be done by double-clicking on the Directory text, locating the directory (with the file selection windows that appears), and clicking Open. Both items are on the System Parameters window under the Options menu.
Refer to your Music 1 documentation on setting up textual break notes, and to the LogMerge documentation section on setting up Selector™ for specific keywords, etc.