Before a fire, evacuation or other drill, the site or office manager gets one brief: the scenario the responsible person has approved, who does what, what each observer records, and the questions for the debrief. It writes no emergency plan.
Staff questions about leave, hours, expenses and conduct get answers that quote your own handbook, name the section, and say plainly where the handbook is silent. Anything about one person's own entitlement goes to HR, and no reply leaves until a person has read it.