Physical environment controls to prevent escalation: arrange rooms to minimise agitation with uncluttered space, promote comfort by reducing noise and stimulation, controlling temperature and allowing food, drink and distractions, provide security cameras, roster additional workers with more supervisor check-ins and ensure good lighting and visibility including car parks. To reduce harm: separate workers from the public with barriers, provide two exits in all interview and treatment rooms, fixed and portable duress alarms, good visibility through layout and observation mirrors, no areas where workers could be trapped such as keyed-lock rooms, secure retreat areas, quiet private secure spaces if patients must be restrained, and no home visits without police or security where violence risk is high. Equipment controls: secure objects that could be thrown or used to injure, face shields where spitting is a risk (weighing the effect on communication), maintained and tested communication systems including duress alarms that work in all community locations and can be quickly responded to, suitable PPE such as stab-proof vests for security guards, and fit-for-purpose vehicles with central locking, GPS tracking, lighting to observe passengers and good maintenance.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.