Event Design App recovers mistakes with Undo (Ctrl+Z, or Cmd+Z on a Mac) and Redo (Ctrl+Shift+Z), protects finished objects with Lock, and lets you inspect details without changing anything using Focus, Isolate and the Grid button. Delete is recoverable: press Delete or Backspace, confirm the item count, and Undo brings the object back.
In a busy layout, the fastest way to wreck an approved arrangement is one stray drag. These controls let you recover quickly, protect what's finished, and look closely without changing anything.
📺 Duplicate, Delete, Undo, and Redo Safely — duplicate, delete, undo, redo and save. Use Top, Perspective, Front, and Side Views covers the keyboard side, and Move, Rotate, and Scale with the 3D Gizmo covers lock, isolate, focus and grid.
These Undo and Redo shortcuts work in the editor:
Action | Windows | Mac |
|---|---|---|
Undo | Ctrl+Z | Cmd+Z |
Redo | Ctrl+Shift+Z or Ctrl+Y | Cmd+Shift+Z or Cmd+Y |
The header's Undo and Redo buttons do the same thing.
Undo steps back through recorded edits, and Redo reapplies one you just undid. Recover mistakes straight away. That includes accidental duplicates, a drag that went too far, and a delete.
⚠ Saving is not a substitute for Undo. Undo reverses the last edit; Save stores whatever state you're in, mistakes included.
Select the object (a chair, table or any other item), then press Delete (or Backspace), or use the red Delete button in the floating toolbar.
A confirmation dialog titled Are you sure to delete? tells you how many items will be removed, for example 1 selected item or 5 selected items. Check that number, then confirm. If it says more than you expected, cancel (press Esc) and fix your selection first.
Delete is recoverable: Undo brings the object back, and Redo removes it again.
[SCREENSHOT 1 — the delete confirmation dialog showing "1 selected item"]
💡 Deleting a practice copy? Press Esc, click just the copy, check the count says one, then delete. Don't delete with two chairs selected.
Lock on the bottom toolbar protects an object from accidental changes. Select the object and click the lock icon. Its transform handles disappear and dragging does nothing.
The button's tooltip changes with context:
Tooltip | When |
|---|---|
Lock selected models | Your selection is unlocked |
Unlock selected models | Your selection is locked |
Unlock locked models | Nothing is selected, but locked objects exist |
No locked models | Nothing is locked (button is disabled) |
To edit a locked object, click it and use the same button to unlock. Handles come back, and you can verify with a small move followed by Undo.
⚠ A locked object feels broken. If an object won't move and shows no handles, check Lock before anything else.
💡 Lock approved objects, and only those. Locking everything just makes the whole scene feel unresponsive.
With an object selected, Focus on the bottom toolbar moves the camera close to it (like zooming in on one item) so you can inspect its shape and proportions. It changes your view, not the object's size.
Zoom out and pan afterward to recover context. A detail view is only useful if you also check the surrounding layout.
Focus is greyed out until something is selected.
Isolate temporarily hides everything except your selection, and centers the camera on it. Use it to inspect a detail, or to select in a dense scene.
Nothing is deleted. The button stays highlighted while Isolate is active, so you can see it's on.
⚠ Turn Isolate off when you're done. When the rest of your scene looks "missing," check Isolate, then Slice Above (a Top view option that hides everything above 2 meters), before assuming anything was deleted. After exiting, the camera may still be close, so return to Perspective and reframe.
Isolate is available once something is selected, or while you're already in it.
[SCREENSHOT 2 — Isolate active on a chair, the rest of the scene hidden, button highlighted]
The Grid button toggles the floor lines (the grid or gridlines on the floor). Use whichever view makes the task clearer. The objects stay exactly where they are.
⚠ Grid is a visual reference, not a snapping control. Alignment guides while dragging are a separate, automatic behavior. See Move, rotate, scale, and snap.
⚠ The tooltip reads "Toggle Grid (G)," but G switches to Move. Click the Grid button instead.
These are the verified shortcuts for editing safely. They work only when the canvas has focus, not while you are typing in a text field.
Shortcut | Action |
|---|---|
Ctrl+Z (Windows) / Cmd+Z (Mac) | Undo |
Ctrl+Shift+Z or Ctrl+Y (Windows) / Cmd+Shift+Z or Cmd+Y (Mac) | Redo |
Delete or Backspace | Delete the selected object (a confirmation shows the item count) |
Esc | Cancel the delete confirmation, clear the selection, or cancel a pending placement |
Shift + drag, in Move | Duplicate the selection |
G | Switch to Move. It does not toggle the grid |
Lock, Focus, Isolate and Grid have no documented keyboard shortcut. Use their buttons on the bottom toolbar.
Use this routine to edit without losing finished work:
Select the object. Confirm the selection and the count.
Make one small change.
If it's wrong, Undo — don't stack corrections.
Lock what's finished.
Save. Wait until the button returns to Save from Saving.
Autosave runs about 60 seconds after your latest change (a new edit restarts the wait). Don't rely on it before leaving.
Duplicate a chair (hold Shift in Move and drag). Separate the copies.
Select only the copy, delete it, and confirm the dialog count. Undo and Redo.
Lock a chair, try to move it, then unlock it.
Use Focus, then Isolate. Exit Isolate and reframe.
Toggle Grid on and off.
Save, reopen, and confirm the locked chair is still locked.
My object won't move and has no handles. It's locked. Select it and unlock it.
Half my scene vanished (or objects are missing). Isolate or Slice Above is on. Turn it off.
The Lock button is greyed out. Nothing is locked and nothing is selected, or there's nothing to act on. Select an object.
Focus and Isolate are greyed out. Select an object first.
Ctrl+Z / Cmd+Z did nothing. A text field has focus. Click blank canvas, then try again.
I deleted the wrong thing. Press Undo right away.
G toggled Move instead of the grid. G is Move. Click the Grid button.
Press Ctrl+Z on Windows or Cmd+Z on a Mac. Redo is Ctrl+Shift+Z or Ctrl+Y on Windows, and Cmd+Shift+Z or Cmd+Y on a Mac. The header's Undo and Redo buttons do the same thing. If nothing happens, a text field has focus, so click blank canvas and try again.
Yes. Undo brings a deleted object back, and Redo removes it again. Press Ctrl+Z (Cmd+Z on a Mac) right away. Before confirming a delete, check the count in the confirmation dialog; if it says more than you expected, press Esc and fix your selection first.
It is locked. Locked objects show no transform handles, and dragging does nothing. Select the object and click the Lock button on the bottom toolbar, whose tooltip reads Unlock selected models. Handles return, and you can verify with a small move followed by Undo.
Isolate or Slice Above is probably on. Both hide objects without deleting them. Isolate stays highlighted while active, so click it to exit, and turn Slice Above off in Top view. Afterward the camera may still be close, so return to Perspective and reframe.
No. The Grid button only shows or hides the floor lines as a visual reference, and the objects stay exactly where they are. Alignment guides while dragging are a separate, automatic behavior. G does not toggle the grid either; it switches to the Move tool.
No. Focus moves the camera close to the selected object so you can inspect its shape and proportions; it changes your view, not the object. Focus is greyed out until something is selected. Zoom out and pan afterward to recover the surrounding context of the layout.