You're developing an eLearning module in Adobe Captivate or Articulate Storyline. There's a slide that plays for 45 seconds. As you're listening to the audio, you'd like a screen object to appear in sync with the voiceover audio or some other screen action.
If the object in question is already on the slide, you can certainly select the object on the Timeline and drag it until its left edge gets to the desired part of the Timeline. Of course, if the slide is playing for a significant amount of time, that's going to require a lot of dragging.