Located at: 11811 N Tatum Blvd. Purchase A Domain Name or See Numbers 3, 4, and 5 Below 3.Browse Regus meeting rooms in Phoenix. Fully furnished conference rooms, meeting space and training rooms in convenient locations. The Maricopa County Board of Supervisors Formal and Informal meetings are open to the public and will proceed under ARS 38-431 et.al. See below to access public meeting notices, agendas, attachments and minutes. Physical copies of the public meeting notices are also posted at the locations. Both the Phoenix and Tucson Offices are open for walk-in services Monday through Friday (except Holidays) from 8 am to 4 pm. Office of the Secretary of State Meetings are once a month, non-industry specific and are in the evenings for an hour.