Drag and Drop

(1) Open a catalog window.

(2) Drag a disk icon from Finder to the catalog window. That's all.

Batch Scan Mode

You can also use a batch scan mode.
(1) Open a catalog window, and click the "Batch scan" button.

(2) The batch scan window will be shown. Then, insert your CD or DVD.
DiscCatalogMaker RE will start scanning the disk, and eject it after scanning.

(3) Insert next CD or DVD, while you want to continue.