It's super easy to rearrange objects on the Articulate Replay timeline.
Reordering Objects on the Same Track
To change the order of objects on the same track, simply drag them left or right to a new location. You can reorder lower thirds, video clips, sound clips, and images.
Tip: When two items are back-to-back on the same track, a vertical boundary between them means the transition will be immediate and abrupt. If you push the two clips even closer together, their boundary will change to a diagonal line, which means one item will fade smoothly into the next.
Moving Videos, Sound Clips, and Images Between Tracks
You can also move videos, sound clips, and images between tracks. Just drag them up or down to an empty spot on the adjacent track.
Tip: When both tracks include video clips, use video mixes to control how they interact with one another. For example, you might choose a picture-in-picture mix. See Mixing Videos for details.
To delete an object, just select it in the timeline, then click the Delete key on your keyboard.