A more thorough explanation:

Elisor is a person who is chosen by a court to do certain tasks if the sheriff or coroner is unable to do them. These tasks can include assembling a jury or serving a writ.

• If the sheriff is involved in a case, an elisor may be appointed to serve legal documents to the parties involved.
• An elisor may be called upon to select potential jurors for a trial if the sheriff is unable to do so.

These examples show how an elisor can step in and perform duties that the sheriff or coroner cannot do. This ensures that legal proceedings can continue even if there are conflicts of interest or other issues that prevent the usual officials from carrying out their duties.