What are the standard room setup styles?

Almost every event in almost every room is one of seven setups. Knowing which one you are being asked for tells you how many people fit, how much floor the tables leave for everything else, and how long the room takes to turn.

The style decides the capacity, not the square footage. The same 13,500 ft² ballroom holds about 280 in banquet rounds and about 336 in theater rows — the chairs did not change, the tables did.

The seven setups

Square feet per person below are planning rules of thumb for a rectangular room with normal aisles, service access and a stage at one end. They are a starting point for a proposal, not a fire-code capacity — that number comes from your local authority and your own posted capacity chart.

Two of these are worth knowing the trap in. Classroom looks like theater with tables, but it costs roughly twice the floor per person, so a room that seats 300 in theater rarely seats more than 150 in classroom. And conference, U-shape and hollow square do not scale: past about 40 people nobody can hear across the table, and the setup should become classroom or banquet rounds instead.

Banquet rounds: the numbers people actually ask for

The last column is the one that gets forgotten. A 72″ round is six feet across, but with chairs pulled out it occupies about eleven, and you still need an aisle between that circle and the next one. Planning on the table diameter rather than the served diameter is the single most common reason a floor plan does not survive contact with the room.

Rather than doing that arithmetic by hand, the capacity calculator works it out for your real room — your dimensions, your table, your spacing, with the stage and dance floor already subtracted.

Auto-Fill builds these to scale rather than making you place them. It draws eight, not seven: banquet rounds split into staggered (offset row to row, so service can reach every seat) and aligned (a strict grid, for sightlines), and it adds a trade-show booth grid. Reception is the one setup with nothing to generate — it is highboys and bars, placed where the traffic goes. See all eight generated to scale.

Saving a setup so you only build it once

Most venues run the same handful of setups over and over, and rebuilding them every time is wasted work. In EventDiagram a setup is saved onto the event space itself, so it sits with the room it belongs to rather than in a folder somewhere.

1. Build the setup once in the room it belongs to.
2. Open the … menu at the top right, next to Share.
3. Choose Save as layout template…. The button names the room it is saving to, so you can see where it will land.
4. Name it the way you would say it out loud — Banquet 280, not layout 7.
5. Open Spaces and it is on that room, under Saved setups. Click it and a new diagram opens already laid out.

Select part of the plan before you save and only that part is kept — the staging package without the tables, say, or the bars and the dance floor on their own. That is how you build a library of pieces rather than a shelf of whole rooms.

Starred diagrams appear on the same shelf, so a real plan from a real event becomes next month’s starting point without anyone copying it anywhere.

Which setup should you quote?

When a client gives you a headcount and not a style, the question that settles it is what the room has to do. Eating means banquet. Listening means theater. Writing means classroom. Deciding means conference or hollow square. Mingling means reception — and a reception in the same footprint holds nearly twice a banquet, which is why the cocktail hour so often happens in the foyer while the ballroom is turned.

If the event does two of those in sequence, that is two diagrams in one event, not one drawing you edit twice. Events versus diagrams explains why that separation is worth keeping.