Multi-room streaming simply means more than one device can be logged into the same account and watching independently at the same time — one person following the football in the lounge while another watches a film upstairs.
The number of simultaneous streams your account supports depends on your plan’s connection limit, which is separate from how many devices you can install the app on. You can register the app on every television, box and phone in the house; the connection limit only governs how many of them can play video at the same exact moment.
Setting it up requires nothing extra — every device signs in with the same login details from your welcome email, and the system handles the rest automatically. If a stream will not start on a new device, it usually means the connection limit is already in use elsewhere; simply pause playback on one screen and try again.
For households with more than two or three regular viewers, choosing a plan with a higher connection limit up front avoids this altogether and is worth confirming before checkout.