A more thorough explanation:

A jury commissioner is an officer responsible for selecting and summoning potential jurors for a trial.

In a criminal trial, the jury commissioner is responsible for selecting a group of people from the community who are eligible to serve as jurors. The commissioner will send out summonses to these individuals, requiring them to appear in court on a specific date.

Another example is when a civil trial requires a jury. The commissioner will select a group of people who are unbiased and have no connection to the case.

These examples illustrate how the jury commissioner plays a crucial role in ensuring that a fair and impartial jury is selected for a trial.