Nev. Rev. Stat. § 284.155
2. The code must include regulations concerning certifications and appointments for:
(b) Classes where applicants for promotion are not normally available.
These regulations may be different from the regulations concerning certifications and appointments for other positions in the classified service.
[20:351:1953]—(NRS A 1963, 1041; 1981, 1040; 1983, 625; 2003, 1438)