You can copy objects singly or multiply.
Copy Objects:
1. Select the object you want to copy, and press Ctrl+C. You can also press Ctrl+X to cut the object.
2. Move the mouse to the location where you want to paste the object and press Ctrl+V (Start> Paste). You can also use the "Paste" command on the context-menu.
Multiple Copies of Objects:
If you want to place several, similar objects with the same distance on the workspace, select the object and then choose Multiple Copies in the context menu. Define the number and spacing of the objects horizontally and vertically.