Dual-Camera MeWe's can be created with iPhone XR or newer iPhones, and viewed on all platforms (iOS, Android, and desktop).
1. Tap 
Communities
2. Select the group you would like to share a Dual-Camera MeWe to
3. Tap 
4. Tap the Camera icon 
5. Choose MeWe from the option bar at the bottom of your screen
6. Tap the Record button to simultaneously record with your iPhone's front-facing ("Me") and back-facing ("We") cameras
7. Tap Done