SalesScreen provides a powerful toolbox to customize the look of your dashboard. You can both rearrange and resize your widgets. These two functionalities goes hand in hand, so if you don't know how to rearrange widgets, have a look here.
The first step is to navigate to the Dashboard located in the left side menu.
Now hover your mouse cursor over the cogwheel icon of the widget and click Resize.
A right panel appears which contains a grid of 4 x 4. The grid illustrates the possible sizes the widget can have. When you hover the different tiles, you will see how the widget will look like. When you find the size that you want, click on that tile.
Finally click on the Save button in the right panel to save your changes.