Nev. Rev. Stat. § 4.340

1. Whenever any justice of the peace, in consequence of ill health, absence from his or her township, or other cause, is prevented from attending to his or her official duties, the justice of the peace shall, if necessary, invite any other qualified justice of the peace of the same or another county or appoint a person from the panel of substitute justices of the peace pursuant to NRS 4.032 to attend to his or her official duties, including those of registry agent. If the justice of the peace does not obtain another justice of the peace pursuant to this section and the justice of the peace fails or is unable to appoint a person from the panel of substitute justices of the peace pursuant to NRS 4.032 , the board of county commissioners shall: (a) In counties whose population is more than 100,000, appoint any other justice of the peace of the same or another county or a person from the panel of substitute justices of the peace pursuant to NRS 4.032 to attend to his or her official duties. (b) In counties whose population is 100,000 or less, appoint any other justice of the peace of the same or another county or a person from the panel of substitute justices of the peace pursuant to NRS 4.032 or obtain a judge of a municipal court pursuant to NRS 4.345 , to attend to his or her official duties. A temporary vacancy resulting from absence, disability or other cause must not be filled by another justice of the peace or a substitute justice of the peace for more than 30 days at any one time.

2. Whenever any justice of the peace, in consequence of having too many or too lengthy matters before him or her, is prevented from timely attention to his or her official duties, the justice of the peace may, with the consent of the board of county commissioners, invite any other duly qualified justice of the peace of the same or another county to attend to some or all of his or her official duties, including those of registry agent, for no more than 30 days at any one time.

3. A justice of the peace from another county temporarily acting in the place of another justice of the peace has no claim for services rendered by him or her pursuant to this section against the county in which the justice of the peace customarily serves. The justice of the peace is entitled to receive his or her necessary traveling expenses from the county in which he or she is invited to serve, together with any additional compensation authorized by the board of county commissioners of that county.