You can add or delete columns with the help of the context menu. For that:
|•||select the table or any of its elements and place the cursor on the needed column. The cursor's form changes to a small black arrow. |
|•||left click, in order to select the column;|
|•||right click in order to show the column's context menu;|
|•||if you need to select several adjacent columns, left click and, without leaving it, move the mouse to the right or to the left, in order to select adjacent columns.|
Column's context menu can also be called in the "Report Tree" window. Open the window, select the needed column and right click the mouse.