N.C. Gen. Stat. § 153A-52.1
The board of commissioners shall provide at least one period for public comment per month at a regular meeting of the board. The board may adopt reasonable rules governing the conduct of the public comment period, including, but not limited to, rules (i) fixing the maximum time allotted to each speaker, (ii) providing for the designation of spokesmen for groups of persons supporting or opposing the same positions, (iii) providing for the selection of delegates from groups of persons supporting or opposing the same positions when the number of persons wishing to attend the hearing exceeds the capacity of the hall, and (iv) providing for the maintenance of order and decorum in the conduct of the hearing. The board is not required to provide a public comment period under this section if no regular meeting is held during the month.
N.C. Gen. Stat. § 153A-52.1