When you press "play" in MirrorOp, by default the software will start to Duplicate your screen content to the wePresent. This is the most common way of presenting, simply showing a 1-to-1 copy of the content that is on your own device.
Extended Screen (software install needed)
It is also possible to set your MirrorOp software to 'Extend' instead of 'Duplicate'. This will turn the wePresent display into your extended screen. If you already physically have a secondary screen setup, then MirrorOp will duplicate the content from your secondary screen.
On some Operating Systems MirrorOp will ask you to download a Virtual Display Driver before it can be set as Extended screen. If installing the Virtual Display Driver is required on your Operating System, then Extended Screen is only possible if you have the MirrorOp software installed.