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.