There are two methods for installing Addigy via Labtech. Both methods require the Single command install script from the Downloads section of Addigy.  

The first method is to create a Script, and specify just one step (Function: Shell). Paste in the Single command install from the Addigy Downloads page.

The second method is to simply right-click on your Device group and choose Scripts -> Software -> Tools and Utilities -> Shell Commands, and execute the Single command install operation.

Note: You may need to wait a while for Labtech to run the queued operation, and you also may need to reload the Addigy page to ensure that your device has been added to your organization.