Acting governor during temporary absence of Governor
Section 190 · 1999 Constitution (2004 edition)
What Constitution says
Whenever the Governor transmits to the Speaker of the House of Assembly a written declaration that he is proceeding on vacation or that he is otherwise unable to discharge the functions of his office, until he transmits to the Speaker of the House of Assembly a written declaration to the contrary such functions shall be discharged by the Deputy Governor as Acting Governor.
This is the 1999 Constitution as published in 2004. Later amendments aren't included yet, so a section may have changed since.
Original source
Official Gazette · CFRN 1999 official PDF · printed page 89. Original document
Release: draft-c8d50d87fae9. Source scope, review and corrections