The Assembly Number 3 4623 should be displayed at your official assembly point 3 position. The sign will inform people that they have reached a safe haven, during any drill or actual emergency.
This sign can help to keep people safe during a crisis. Once you know that people are at assembly point 3, you will know that this will be situated away from any potential danger. This sign can be very reassuring to people at a time of crisis as they would realise that they had reached safety.
Fixing requires anything as simple as sticky pads, 'No-nails' type adhesive or double-sided tape.