There are various ways in which you can rearrange scenes and frames within your smoovie.
First, select the items you wish to work with by doing one of the following:
Selected items can be put on the clipboard using Edit > Copy or Edit > Cut. Items that are cut will be permanently removed from your smoovie unless they are subsequently pasted to a new location.
Generally, pasting items will insert those items in the clipboard immediately below the currently selected items in the Scene List to Frame List. However, selecting a scene and pasting frames will insert those frames at the start of the scene.
To create a new scene from frames on the clipboard:
Within the Scene List or Frame List, items can be reordered by dragging and dropping as follows:
In all of the above cases holding the Option (⌥) key down will copy the original items to the destination instead of moving them.
Selected items can be duplicated by using Edit > Duplicate. Duplicated items will be inserted immediately below the last selected item in your list.