Multi-floor stacking: designing more than one storey
Replicate your ground plate across additional floors with a vertically-aligned stair core, then switch between levels while you edit.
Most plans don't stay single-storey for long. Multi-floor stacking takes your ground-floor plate and replicates it across as many additional floors as you need, at correctly stacked elevations, with a vertically-aligned stair core connecting them — so you're not manually recreating the stair position and re-checking alignment on every floor by hand.
Once a project has multiple floors, a floor switcher in the toolbar lets you move between levels while editing, and the 3D view composites every level into one model, so you can orbit the whole building rather than one slice of it at a time. Compliance, quantities and area statements are computed per floor and rolled up, since a FAR check or a BOQ line item means something different in that context than a single flattened total would.
It's a deliberate middle ground: full multi-storey structural coordination (beam/column continuity, load paths) is out of scope for an architectural design tool — but getting the geometry, stair alignment and per-floor compliance right across floors, without hand-replicating a plan five times, is exactly what this is for.