Install the app on the phone or tablet you will direct from, and log in with this account.
In the app: Sign in → Scan QR from website. Works once, for 5:00.
Connect your channels. In the app, tap the people icon on the home screen, then Connect YouTube or Connect Facebook. For Instagram you paste a stream key per event.
Create an event and choose Cloud production, so no laptop is needed.
Share the camera QR code with the phones at the venue. Each one taps Go live.
Go live from the control room. Your watch page link is on the event screen, ready to share.