Switching cameras (front-facing & back-facing) in Unity

Hello,

I’ve downloaded and messed around with the example project from the Zappar Unity Github and there’s one thing I can’t seem to grasp and that’s switching between the front-facing and back-facing camera. I’ve read the documentation but can’t seem to understand how or where to call the Z.CameraSourceStart(…) function. Any help would be greatly appreciated.

Cheers