In this lesson, you will use a combination of cloning and vertex editing techniques to quickly create more cabinets of various heights and widths.
Set up the lesson:
Create a 24 inch-wide lower cabinet:
+drag the object on its X axis to the left.
Object group, make sure Copy is chosen. 
You are specifying the value 24, because the cabinet you are about to create will be 24 inches wide.

Polygon Modeling panel, click Modify Mode. 
Polygon Modeling panel, activate 


. You are enlarging the cabinet equally on either side to ensure that the cabinet’s pivot point remains in the center of the object.
Create double doors for the new cabinet:
Cabinets that are 24 inches wide generally have double doors rather than a single one.
Polygon Modeling panel, click to activate
+click Holding down
while you click this button selects all the vertices that were in the previous Element selection.
+region-drag around all the vertices on the left side of the door, to remove them from the selection. Make sure that the Reference Coordinate System is still set to World.
By moving the remaining selected vertices to the left by 12 inches, you just created a 12-inch door.

Polygon Modeling panel, activate
+drag the door to the right until it is in position over the opposite side of the cabinet. 

Create a 21-inch-high upper cabinet:
+drag the object on its X axis to the right.
Object group, choose Copy, and in the Name field, type HiCab_18_21, then click OK. You are specifying the value 21, because the cabinet you are about to create will be 21 inches high.
Polygon Modeling panel, activate 
This value represents the full height of the 39-inch upper cabinet, less 18 inches, to give you a 21-inch high cabinet.
Now that you have resized the cabinet, its lower shelf is now exposed.
Polygon panel, activate
.
(Window/Crossing) toggle to
(Window). (It is hard to select the shelf by clicking the cabinet.)

Polygon panel, click