The ribbon, panels, status bar, and selection model.

The ribbon across the top switches what the left-hand task panel shows. The right-hand Selection panel always shows the properties of whatever is selected on the canvas.
| Verb | Opens |
|---|---|
| Select | Select mode — click any element on the canvas to edit it; the panel also shows Zone utilization per zone |
| Project | Project settings (void dimensions, clearance, linked zones) |
| Electrical | Add / edit cable trays |
| Mechanical | Add / edit ducts |
| Pipes | Add / edit pipes |
| Visibility | Visibility settings (what the drawing shows) |
| Rule Set | Project compliance thresholds |
| Validation | Coordination & access checks |
| Export Image | PNG / JPG export of the section |
| Auto arrange | Runs the automatic layout engine |
Click any duct, tray, pipe, branch, or zone to select it and edit its properties in the right-hand panel. Shift-click or Ctrl/Cmd-click to add to the selection, or left-drag a rubber-band over several items (see Getting started).
With more than one item selected, the panel switches to Multiple selection: it lists a count per kind (e.g. "3 ducts", "2 branches"), lets you edit shared properties — Colour and a bulk Rename all (renames every selected item to "prefix 1", "prefix 2", … in selection order) — and exposes align (left/centre/right edges, top/middle/bottom edges) and distribute (horizontally/vertically) from the right-click context menu. Deleting, moving, and aligning a selection set all commit as a single undoable action.
Right-click an element or the canvas for: Undo, Redo, Delete selection, Fit view, Select all mains of this service, Select all branches of this main, align/distribute (when more than one item is selected), and Repeat (re-runs the last command). Actions that don't apply to the current selection appear disabled with an inline reason (for example "Select something first" or "This main has no branches").
Along the bottom: the current zoom percentage and the pointer coordinates in mm (a dash when the pointer is off the canvas) on the left; the current mode (for example Select mode) and a Linked zones: On/Off indicator on the right. What the drawing shows — Grid, Origin, Zones, Branches, Dimensions, Zone labels, Service labels, Corridor section, worker overlays, Reach envelope, Opaque services, and Leader labels — is controlled from the Visibility panel.
The workspace opens as a view-only viewer on a phone or narrow window — you can open and look at a previously saved project but not create or edit the layout. Use a desktop-width screen to edit.