SmartDock can be used with one or two external displays or projectors. With one display, both video call and content shared to the meeting will be displayed on the same screen.  With two displays, you will need to enter SRS/MTR client settings and Enable Dual Monitor Mode. Then the video call will be displayed on one screen, while the shared content will appear on the other. In SRS/MTR client settings, you can also Swap Screens to change which displays the call and which displays shared content.