The Marion County Board of Supervisors will meet in regular session Tuesday the board will hold a public hearing on zoning map changes in the unincorporated town of Columbia. Following the hearing they will consider approval for amending the zoning map and authorization of final publication. The board will hold a discussion and take possible action regarding assignment of a county held tax sale. They will also consider approval of the fiscal year 2020 property tax credit applications as well as hold a closed session to evaluate the professional competency of an individual whose appointment, hiring, performance, or discharge is being considered.