You need to be in edit mode in order to manage layout.

Use buttons in the upper right corner of the view to manipulate with it.

managing-layout

Edit mode

You can perform the following actions when being in edit mode:

The user needs report editor role or editing permission to manage report layout.

Reset layout

Click on Reset layout button in upper right corner to place views into their default positions.

Layout reset will remove all empty view.

reset-layout

Video Tutorial

<div style="text-align: center">
<iframe width="560" height="315" src="http://www.youtube.com/embed/4qHdaYuMf7I" frameborder="0" allowfullscreen></iframe>
</div>

Next steps