FarPoint.Win.Spread.CellType.MultiOptionCellType multcell = new FarPoint.Win.Spread.CellType.MultiOptionCellType();
multcell.Items = new String[] { "1장", "2장", "3장" };
multcell.Orientation = FarPoint.Win.RadioOrientation.Vertical;

// EditorValue 및 Value 설정
multcell.EditorValue = FarPoint.Win.Spread.CellType.EditorValue.Index; // 기본설정
fpSpread1.Sheets[0].Cells[0, 0].Value = 0;
            
// A1 셀의 셀타입 적용
fpSpread1.Sheets[0].Cells[0, 0].CellType = multcell;