This window deals with the manipulation of instances within one or more cells.
When manipulating one or more instances within the cell view, whether it’s position, rotation, or scale, the instances can be snapped to specific values configured within the Edit->Preferences->3D Scene editing menu.
To begin snapping an instance, hold down CTRL when transforming the instance, whether it’s with the gizmos or by dragging the mouse, and the instance will snap to the closest value as you manipulate the instance.
Snap to reference¶
If you want to snap instances relative to another instance, you can select a snap target with SHIFT + Middle Mouse Button to select a snap target. This will highlight the instance in a yellow wireframe. Then, just with regular snapping, you hold down CTRL when manipulating the instance(s) and the transformed values will be snapped to the snap values relative to the snap target’s world space.