What my hospital has is something we call a "Code Atlas". It's an overhead page like any other code. People who are CPI trained (like ER nurses and techs, psych nurses, or anyone else interested in getting the cert), plus security, and the house supervisor all run and show up. If nothing else, it gets you a whole mess of people with some qualifications for escalated situations to show up. There is even a form to follow and fill out, like a regular code. We even do a very short debriefing afterwards for process improvement and prevention.
On average, four to six extra people show up for every Code Atlas. Whoever can get the best and quickest rapport with the patient leads the code. Theoretically, CPI teaches you the safest way for staff to de-escalate the situation and lay hands on the patient, if needed. If needed, usually the bed side nurse or house supervisor pages the MD for an IM or IV med to calm the patient down, if one isnt already ordered. Sometimes you can talk the patient into accepting the med without hands on. Sometimes, we have to lay many hands on the patient to administer the med. We have a protocol that if the patient is in "acute psychic distress" or an imminent physical threat to themselves or others, they can get the IM/IV, even if they do not consent. That's when lots of people around comes in handy.
Sometimes patients will just calm right down and back off when they see the entire calvary show up; being outnumbered will settle quite a few people very quickly. Others need a new face to vent their frustration or complaint to, like the supervisor, and just having their voice heard by a higher up, will calm them down. And a very few will just pop their top and get physical. Those get the antipsychotics or benzos injected.
The Code Atlas is great for those situations when you don't have much man power on your floor and you need back up fast. If you are interested in more details on how we do it, you can PM me and I can discuss our specific policies with you.
Good luck on your safety initiative!