Move to Zero moves the selected objects to the origin (0, 0, 0) in one click. Use it when a scan or a model comes far away from the origin, for example in the coordinates of the scanner, and before you align or arrange models. The button is on the Transform tab, and the same button is on the Nesting tab.
What the tool does depends on what you select.
If a mesh or a point cloud is selected, the tool moves the centre of its bounding box to the zero point of its parent. For an object at the top of the Scene tree, that is the global origin. In the example below, Toggle Global Basis on the View tab and Bounding Box on the Inspect tab are turned on for clarity.
If a feature, such as a point or a plane, is selected, the tool moves the parent object so that the feature itself comes to the origin. In this example, a point was first created with Point on the Inspect tab; then Toggle Global Basis was turned on and Move to Zero was clicked.
The tool works on all selected objects at once. It changes only the position of an object: the rotation and the scale stay as they are, and the mesh itself is not edited. To undo the move, use Undo (Ctrl+Z, or Cmd+Z on macOS).
Move to Zero is useful to normalize the position of a model, to prepare it for alignment, or to reset its placement before other transformations. To also turn a model so that its base lies on a plane, use Align to Plane. To see the axes and the box, read about Toggle Global Basis and Bounding Box.
