A more thorough explanation:

Iudicum subsortitio is a Latin term used in Roman law. It refers to the practice of selecting additional jurors, after peremptory challenges have been used up, by drawing names from an urn containing the names of eligible participants.

For example, in a trial, both the prosecution and defense have a limited number of peremptory challenges to remove potential jurors without giving a reason. Once those challenges are used up, the court may resort to iudicum subsortitio to select additional jurors.

Another example is when a jury pool is too small to provide enough jurors for a trial. In this case, the court may use iudicum subsortitio to supplement the pool with additional eligible participants.

These examples illustrate how iudicum subsortitio is used to select additional jurors when necessary, ensuring a fair and impartial trial.