Cloning objects while scaling them can produce a variety of nested objects and arrays, depending on the center you choose.
Shift+Scale creates a clone of a different size.
Transform settings determine how 3ds Max distributes clones of a selection during Shift+Scale. In all scaling operations, the transform center acts as the center of scaling:
The distance between cloned objects is scaled like the clones themselves, based on the initial distance from the original to the first clone. The spacing increases or decreases proportionately with respect to the transform center.
When the selection center is used as the transform center for a single object, scaling occurs symmetrically around that center, producing nested copies.
Variations are possible, depending on the type of scale and axis limitations. For example, you can scale a flat box into a progressively stepped pyramid by using Squash and cloning inward on the Z axis.
For Shift+Scale, any center other than the local pivot has the effect of creating an array of progressively scaled objects. Again, objects scale down in size toward the center, while increasing in size further away. However, this effect is limited by the particular scale option and the axis constraints, as discussed next.
Uniform Scale is unaffected by axis constraints, which you can set with the Transform Gizmo. Copies are always arrayed in or out from the center of the current coordinate system.
For Non-Uniform Scale and Squash, scaling occurs only along the axis or axes set with the restricted axes.