Well...I tried that- wanting to add "space" before the first slide (a Title) appears. When I try to pull the first slide to the right to create a space for the blank slide, it just stretches the first slide along the timeline. Every attempt to insert a blank side, even if I have the timeline marker at the very beginning, results in the blank slide being inserted AFTER the first slide, not BEFORE. I thought your suggestion made sense but, clearly, I am missing something.