sr1(1)(1)
The senate shall elect, by roll call vote, one of its members to serve as president and one to serve as president pro tempore. The president and president pro tempore shall serve for the biennial session unless separated by death, resignation, or removal by the adoption of a resolution by a majority of the current membership.
sr1(2)
(2) The president is the senate's presiding officer and shall authenticate by personal signature all of the acts, orders, and proceedings of the senate.