You can insert grid rows or grid columns when using the special grid mode. The special grid mode can be used from a grid width of 30.
Procedure
Click Grid if the grid is not already displayed.
Right-click the column or row in front of or above which you want to insert more columns/rows.
Click Insert rows or
Insert columns. The corresponding dialog opens.
Enter the number of columns/rows you want to insert.
Click OK.
The grid columns or rows are added. The objects placed to the right of the inserted columns are moved to the right accordingly. The objects placed below the inserted rows are moved down accordingly.