Live-streaming is very simple once you have your 4K action camera linked to the app.
1. Tap the home button on the bottom left of the home screen and it will take you to the device selection screen. If you already have your device synced your device will be the only one you see.
2. Select the "Live" button on the top right to continue.
3. Configure the required fields for your stream then you'll be good to go.