You configure the output using the ditafm-output.ini file at %appdata%\Adobe\FrameMaker\<Version Number>.
Once you have set the configuration in ditafm-output.ini file, with a ditamap in focus, do the following:
Select File > Save Ditamap As.
In the Save Document, select Book <Version Number> with fm components.
Click Save.
FrameMaker generates a book from the ditamap in focus.