We do not have an actual SOG for duty crews during social events.
What we do at the Parksville Fire Department is put out a "sign up" sheet for a duty crew for all of our social events. We try to have enough staffing for one apparatus - a six person crew - which includes an Officer and a driver. Best case we like to have enough members to crew two apparatus.
We also have a Duty Officer who responds to all calls, so at minimum we would have seven members responding to an emergency call.
Hope this helps !! Feel free to contact me if you have any questions