This guide is made to show how you setup Citrix to display Cloud Desktop across multiple monitors.
When logged in to Cloud Desktop, click on the black bar in the top of the monitor.
Click on Window.
Arrange the windows so that it goes across the monitors that you want Cloud Desktop on, as shown in the image below.
Click on Full-screen in the black bar in the top of the window.
Now you're setup to use Cloud Desktop across multiple monitors. To make it work optimally, you need to log off Cloud Desktop and back on again, for Citrix to register the two monitors.