Legal Question in Criminal Law in California

I assume you mean larceny, not Larson.

Yes, the defendant has a right to be present at all stages of the case, including jury selection.

If you're representing yourself (horrible idea), then you pick your own jury following applicable rules, laws and procedures.

If you have an attorney, they do the questioning of jurors. It's between you and your attorney to decide how much input you have. Some defendants just let the lawyer handle it all. Some want to have input. Conversely, some lawyers want input from their clients. Others would rather take their experience over your gut feelings.

Or any combination of the above.