This video looks at how to record dual channel audio (two microphones at the same time) with the Sony a7siii. I recommend two different solutions for how to achieve this. These tips and trick should also be applicable to recording sound on most Sony mirrorless cameras.
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Here are a few of my other projects you might enjoy:
The Clinic | Congo Documentary:    • The Clinic | Congo Documentary  
What I learned in the Congo:    • What I learned in the Congo  
How to Stay Sane:    • How to Stay Sane During a Pandemic  
How to Deal with Change and Transition:    • How to Deal with Change and Transition  

* I receive a small commission at no extra charge to you for purchases made through the affiliate links