Working with the Select ISO 9660 Window
Before you record the disc, you can make changes that affect the final contents of the disc. The Select ISO 9660 window has panels you access by clicking the tab you want: Files, Layout, or Settings.
Files: Selecting the data
Layout: Determining the layout or order of the files on the disc
Settings: Setting the options for file naming, format, etc.

See Also:

Overview of Making an ISO 9660 Cross-platform Disc
Recording an Additional ISO 9660 Session