Plan for the actual event
A function room can host a dinner, exhibition and conference in the same week. The walls remain in place while passages between tables, stages and displays change. Check the event layout against the venue's agreed arrangements before reusing a diagram.
HSE says event emergency plans should be proportionate to the risks. It identifies alarm raising, communication, evacuation, disabled people's needs and emergency roles as relevant matters. A displayed drawing supports this wider planning; it does not replace it.
Coordinate venue and organiser information
Provide a current base drawing and ask for the proposed layout early. Identify differences between fixed venue arrangements and the event-specific drawing. Keep a clear owner for the final version so staff and contractors do not use competing files.
HSE stresses that relevant staff need to understand exits, equipment, alarm raising and who gives instructions. Use the completed drawing in briefings rather than assuming a poster communicates everyone's responsibilities.
Choose the relevant guidance
The Home Office publishes separate assessment guides for small and medium assembly premises and for large assembly premises. The latter covers places where more than 300 people could gather, including conference and exhibition centres. These guide categories are not a calculation of a particular room's safe capacity.
Do not derive capacity from floor area alone or treat the number of drawn seats as approval. Capacity, route suitability and restrictions should come from the relevant assessment and management arrangements.
Check the final setup
Identify the venue, floor, layout and revision. Show exits and routes, adding first-aid or assembly information where useful. Compare the drawing with screens, temporary partitions and equipment before doors open.
If the layout changes, review the information rather than reusing the last event's printout automatically. This is general drawing guidance, not legal advice or an event safety assessment.
Official sources & further reading
- HSE: Planning for incidents and emergencies
- Home Office: Small and medium places of assembly
- Home Office: Large places of assembly
Source-linked general guidance, not legal advice. Check current official guidance and obtain premises-specific advice where needed.