You can use the Scale constraint to transfer the scaling from one or more objects to another.

To scale a constrained object:

1. Select a Scale constraint from the Asset browser’s Constraints folder and drag it into the Viewer window.
   • If you drag it into an empty area of the Viewer window, the Scale constraint template appears in the Constraint settings.
   • If you drag the constraint on top of an object, a contextual menu appears asking if you want to assign the object as the constraint’s Source (parent) or Constrained (child) objects .
     

     Constraint contextual menu

2. Assign the object that you want affected by the scaling to the Constrained Object cell.
3. Assign the object that you are using to create the scaling effect to the Source 1 cell.
   Note

   You can have more than one object provide the scaling information to the constrained object by assigning new objects to the resulting Source cells.

4. Adjust the size of the Constrained object, if necessary, with the Scale fields.
   Note

   Disable the Lock option to activate the Scale settings.

5. Click Lock in the Constraint settings to lock the position of the objects to be constrained and click Snap.
6. Click Active to activate the constraint.
7. Deactivate the Affect XYZ options in the Properties window Scale constraint settings to disable the scaling effect per axis.
8. Weight the effect of the individual Source objects, if necessary, with the Sale constraint’s Source Weight slider(s).
9. Select either Geometric or Average as the Blend Method from the Properties window Blend Method menu.