I want to show a picture over my slide upon clicking, but I want to hide the picture in the preview so that I can still edit my content without having to move the image.
Is this possible?
Literally no, but you may have some workarounds:
Probably a better solution will be to use the Selection Pane (Home > Select > Selection Pane...). There you can easily hide and rename the objects in your slide. Hidden objects won't be animated, so when you're done editing you should make them visible again.
(It's an old topic, but I found it via Google, so maybe this can help others who have the same question.)