If you're talking about while you're making the spar, yes, you press the 2 button or use the command to camera focus on the character, I don't know specifically what it is but you can check out the Tutorials or FAQ thread(s).
If you're talking about the replay itself, you can use keyframes to focus on the movements of the character you focus on. There is a tutorial on keyframes, you should check it out if you're interested.