Shop TVs and iPads are set up once by an admin. After that, crew sign in on the board with their name and PIN.
Office staff sign in with their email and password. Crew on the floor use their name and PIN on the board. The Production level controls what they can do on the Production board.
Email is not set up yet, so setup links cannot be sent. Until it is, type a password and PIN for each person.
Screens that stay signed in all the time, like the shop TV and the iPads. Anyone can view the boards on them. Making changes still needs a person's name and PIN.
Do this on the TV or iPad itself. On an iPad, add the Command Center to the Home Screen first (Share, then Add to Home Screen), open it from there, sign in, and set it up from inside that app.