Section 5(2)(a) in The U.P. Lokayukta And Up-Lokayuktas Act, 1975
(a)where the office of the Lokayukta becomes vacant or where he is unable to perform the duties of his office, by the Up-Lokayukta oi if there are two or more Up-Lokayuktas by such one of the Up-Lokayuktas as the Governor may by order direct;