Someone in aisle nine needs help. A button on the wall reaches whoever is free, wherever they are on the floor.
In a large space — a store, a ward, a plant — the person who needs help and the person who can give it are rarely in the same place, and neither wants to go looking for the other.
An administrator creates a QR Assist point in Console, assigns the channel responsible for that location and prints the poster. The public address remains stable until the point is retired.
A visitor cannot be issued a member device key, so QR Assist does not pretend its public request is an end-to-end encrypted channel message. It is a separate, tightly bounded operational event.
Create the point, print its poster and route it to the team already responsible for that part of the floor.