Outputting two camera sources at the same time

Hi guys, subsequent to the question I asked on the other topic, what I really need is to output my two camera sources at the same time to my Wirecast pro, in order to have the live videos side by side on the same shot in the Wirecast instead of switching from one to another on the Atem software.
I'm using Blackmagic Design ATEM Production Studio 4K
Is there anyway to output the two camera sources at the same time to the Wirecast?
I've been searching online to find how I can do this, I will really appreciate any help I can get here.
Thanks

My setup is
1. Blackmagic Design ATEM Production Studio 4K
2. Two Pabadonic ptz caneras
3. Panasonic aw rp50 remote camera controller
4. Blackmagic presenter
5. Imac
6. Wirecast pro

I can do this with ATEM mini Extreme.
Picture in Picture
or 4 or more

You could send one camera out via Program and the other out of Aux.

But...this does then beg the question. What is the switcher for, if you're not gonna, ya know, switch? Why not just connect the two cams direct to Wirecast?