I am new to Photostory having used Pro Show Producer for years. In PSP I could add a slide where my slider was and it would automatically move all content over by the default duration of new slide. This is not how so far I see Photostory behaving. In fact if there is not enough time between the slides open PS will add this slide at the end of the timeline.
It would be cool If I could connect say titles with slides as a group so then it makes it easier to move things over manually if I have to. I think there is a grouping option but not available when I select two objects (slide and title )