Adding period operators Period operators can be added to limit the data in a column to specific periods or months. Select My Reports > Report Designer. On the tab, select a Column Library record. In the Column Details section, open a column record. In the Column Definition section, Column Value field, click the search icon. Click Add Operator To Field. Specify this information: Period Operator Category Specify the information Year Operator Select the previous or following year. Year Shift Specify the number of previous or future years. If Year Operator is blank, then this field must be blank. Period Operator Select the previous or next period. Period Select period, month, quarter, or year. Number A number that identifies the reporting period for this column. The values for the operator are displayed in the Field Preview field.