How to display or hide levels 1 Click the down arrow button next to the data element, as shown in Figure 17‑23. Figure 17‑23 Displaying a menu for a selected element in the cross tab 2 Choose Show or Hide Group Levels. 3 On Show or Hide Group Levels, select the levels to display. Figure 17‑24 shows an example of selecting all levels. Figure 17‑24 Show or Hide Group Levels In the example, the time dimension has only three levels. If you want to display additional levels, such as week-of-month or day-of month, edit the definition of the time dimension in the cube builder. 4 Choose OK. BIRT creates a data element for each selected level, as shown in Figure 17‑25. Figure 17‑25 Cross tab displays a data element each for the year, quarter, and month levels