Ohio Rev. Code § 3506.15
The secretary of state shall provide each board of elections with rules, instructions, directives, and advisories regarding the examination, testing, and use of the voting machine and tabulating equipment, the assignment of duties of booth officials, the procedure for casting a vote on the machine, and how the vote shall be tallied and reported to the board, and with other rules, instructions, directives, and advisories the secretary of state finds necessary to ensure the adequate care and custody of voting equipment, and the accurate registering, counting, and canvassing of the votes as required by this chapter. The boards of elections shall be charged with the responsibility of providing for the adequate instruction of voters and election officials in the proper use of the voting machine and marking devices.
The secretary of state's rules, instructions, directives, and advisories provided under this section shall comply, insofar as practicable, with this chapter. The provisions of Title XXXV of the Revised Code, not inconsistent with the provisions relating to voting machines, apply in any county using a voting machine.
R.C. § 3506.15