You can choose from three different ways to arrange a menu's buttons:
In a horizontal line, a Vertical line or a grid. You can then set the spacing between the buttons and the number of columns in the case of a grid..
In this example we will change the menu arrangement from horizontal lines to a grid.
1. Select the menu that you want to re-arrange, then select the Cog on the lower settings panel.
2. Now use Menu Layout to choose the desired layout (Grid in this example)