In the BT console, how can I start a new command while the old one is still running?

I want to start aireplay-ng while airodump-ng is still running in the background.

Pressing Ctrl+C allows me to start aireplay-ng, but it stops airodump-ng.

In the Graphical Interface its easy, you can just open a new shell while leaving the other running in the background. But the graphical interface causes my laptop to always crash, so I am trying to do it all from the command prompt.