§ 136.240 Challenge of accepted juror

Here's a plain-English summary of this rule:

If a lawyer still has peremptory challenges left (challenges that don't require a specific reason), the court can allow that lawyer to challenge a juror even after that juror was already accepted. This can only happen before the full jury is picked and sworn in. The lawyer has to show the judge a good reason for wanting to challenge this juror now.

In simple terms, this rule gives lawyers a second chance to remove a juror they already agreed to, as long as the whole jury selection process isn't finished yet. It's not automatic though. The judge decides if the reason given is good enough to allow the change. This protects both sides by making sure jury selection stays fair, while still giving some flexibility if new concerns come up about a juror before the trial officially starts.