§ 574 Vacancies filled at once - Challenges to jurors.

Here's a plain English summary:

When a lawyer removes a potential juror from the jury pool, that empty seat gets filled right away before anyone can make more challenges. The court brings in a new person to take the empty spot before moving forward.

This new juror isn't automatically safe from challenges either. Lawyers can challenge this replacement juror too, either for cause (meaning there's a specific reason they think the person can't be fair) or through a peremptory challenge (which doesn't require giving a reason).

In short, this rule keeps the jury selection process moving in an orderly way. Each seat gets filled one at a time, and every juror, including replacements, faces the same possible challenges as everyone else before the jury is finalized.