Setting custom boundaries

In addition to the standard boundary definitions included with App Builder, you can make your own custom boundary settings wherever you want them.

With your project open, use the slider to position the right edge of the canvas area where you want to set the boundary.
Click the uppermost segment of the slider.
This segment is identified by the plus sign (+) icon.

App Builder adds the new boundary marker to the horizontal ruler in your project. You can now use this marker to help define and test the various boundary settings for your project.

Note: Alternatively, you can simply double-click in the horizontal ruler at the point where you want to create the boundary. If you use this option, when the boundary marker is created, App Builder automatically moves the right edge of the canvas area to that point.