§ 621 Challenges classed.

Here's a plain English summary of this rule:

When picking a jury, either side in a criminal case can object to who might serve. These objections are called "challenges," and there are two types.

The first type challenges the whole panel of potential jurors at once. This might happen if there was a problem with how the jury pool was put together in the first place, like if the selection process wasn't done fairly or correctly.

The second type challenges just one specific person who might serve on the jury. This is used when there's a concern about that particular individual, such as if they know someone involved in the case or have a bias that would keep them from being fair.