Android / iOS / Windows Viewer
On the client side, initiate connection to server by opening the spacedesk VIEWER app and select the desired server on the list of detected primary machines to automatically connect. 
If Primary Machine cannot discover, please check the chapter Troubleshooting Network Connection – Cannot Discover Primary Machine below.

HTML5 Viewer
Using the updated web browser, go to HTML5 viewer page then type the IP address of primary machine where the spacedesk DRIVER is installed. 
The “Need Help?” button below the Connect button provides an instructions on how to get the IP address of server machine and then click the “Connect” button to start the connection.