DDJ-RZX: How to EJECT a track from a deck?

There is no hardware button to "eject" a track.

Can I ask why you'd need / want to do that?

On the DDJ-RZX if you hold "SHIFT" while moving the cross fader from deck 1/3 (left) to deck 2/4 (right) it will automatically start BOTH 2/4 decks.  If the the volume on both decks are up and I only really wanted deck 2 (for instance) to play thru MASTER, deck 4 will also inadvertently play over MASTER.  So if I can eject a deck from the board, it can prevent that.  Small little quirk.

There are times in a gig that simple end of song fading to the next is enough and this is perfect IF there was a way to eject tracks.  I rarely touch the mouse or keyboard.  

@Luis > That's because you're using the "faderstart" (by holding SHIFT), and you currently have CH1&3 assigned to the crossfader. If you disabled the channel you didn't want (or simply pulled DOWN the channel fader), then only the channel of audio you're wanting to send would go out.