Changing the order of columns in a grid

A column's position within a grid can be moved by clicking the heading of the column(s) you want to move. The column changes colour to indicate that it is selected. If you want to select a block of columns, select the first column in the block then hold down the shift key and click the last column in the block. 

After selecting the column(s) for moving, hold down the left mouse button on one of the selected columns then, keeping the mouse pressed down, drag the columns to the left or right until located in the position required.

The red arrows indicate where the block of columns will be placed when the mouse is released.

If you want the new column order to be maintained for future sessions be sure to save the grid layout.