Can I disable capturing sound?

I have a Reolink Duo 3 Poe and a number of people have access to it since I’m alone in the middle of nowhere. It’s right by my swing where I would I like to sit and talk on the phone and I’m realizing people can listen to my conversations.

Option A: disable sound
Option B: what’s the best way to unhook it when I want privacy? At the camera or in the house? Sadly my ex set it up and didn’t show me how it works.

Thank you!