In most countries there is a legal requirement to have a trial evacuation practice and record the finding.
You should try and incorporate the different emergency situations in these trials and have the HS committee observe the evacuation and record finding. The committee will need to discuss the process and any learning at the end of the trial.
Tips for Mango Users:
Create an event for the trial.
Raise improvement for any areas of improvement.
Discuss finding at the HS Committee and Senior Management meetings.