To adjust your page layout, you can move and resize layout cells and nested layout tables. (The outermost layout table can only be resized.)
When you move or resize layout cells, they cannot overlap. Furthermore, you cannot move or resize a cell to make it cross the boundaries of the layout table that contains it. A layout cell cannot be made smaller than its contents.
Drag the cell to another location within its layout table.
Press the arrow keys to move the cell 1 pixel at a time.