Stream live with a mixer


We have been given so many different bit of information on this.
We broadcast live and record shows. Can we use an external mixer and if so which one will work with mixxx and now do we do it ?
We operate on a MacBook, we broadcast to airtime, we love mixxx but it woidl be so much easier to be able to a mixer especially for fader slides
Thanks in advance

Sure, please have a look at the manual: 9. Using Microphones — Mixxx User Manual