How do I move slides around?
Just drag and drop them. If you want to move more than one, control-click on each or shift-click to select a sequence. You can also add new slides by dragging and dropping from ithose in the FOLDERS window to any position within your storyboard.
Be sure to drop into the gap between slides so it turns yellow, rather than onto another slide, otherwise it will just place it on top. I find I often do this, since it’s quite sensitive, but I then Undo from the Edit menu and start again!