What settings should I make to use multiple CDJs as sound devices on a Mac?

To use multiple CDJs as audio output devices with Mac OS X, it is necessary to create a device set using the “AUDIO MIDI SETTINGS” included with the computer and to make the required settings.

For details, see the Pioneer DJ web support page.

https://www.pioneerdj.com/en/support/software/cdj-2000nxs/#software-update