Put the HDMI cable from the box into your TV or monitor. Plug the power supply into the box and the wall.
Switch the TV to the matching HDMI input (the remote's Input or Source button).
The screen says HallBoard and Connecting…. If your hall has a network cable plugged into the box, your board appears in under a minute and you are done.
If after about a minute the screen says to join HallBoard-setup, take your phone:
Your board appears in a minute or so. The Player remembers the wifi from then on.
Still stuck? Email hello@hallboard.uk and say what the screen shows.
Your board's address is written on the box label. You can also open it on any phone or computer.