Start with the observable concern.
Keep the source and missing information with the review. The illustrated weapons-response workflow still needs its own validation.
Schools
Give the responsible staff the entrance location, the evidence and a clear task when a concern needs review.

A warning outside the entrance belongs with the people who can act on it.
Keep the source and missing information with the review. The illustrated weapons-response workflow still needs its own validation.
A school response involves people with different responsibilities. A shared case can carry the same source and location to each recipient, while keeping unanswered routes and additional instructions visible.
The same foundation can be explored for reported assistance needs, access reviews and facilities work. Start with a defined responsibility so staff receive a useful task, not another stream to watch.
Bring the public area in scope, the source detail available and the staff who own the response.
Start with a place, a responsibility and the people who know it.
Discuss a school pilot