To speed up development of a campaign, you can copy and paste existing sequences within the Campaign Builder. The process is very easy:
First, select the items you want to copy. You can hold down the Ctrl key while clicking on the items you want to select multiple items.
Next, left click on one of your selected items. Hold down the mouse button.
Last, hold down Ctrl and drag your selected items to a blank space on the canvas. The original items will remain in place, and the copies will be added to the canvas.
The instructions are slightly different for Mac users. Instead of holding Ctrl when dragging your selected items, hold down Command key. Remember, you need to left click before holding down the Command key.
For the mac you are not correct. Here is my screen cast http://youtu.be/D3vNzWaahrk