Move your built engine to folder which you set as root when you installed Launcher.
E.g. if you set C:/UE as root when installed Launcher then move your 4.4 engine to C:/UE/4.4, your 4.3 engine to C:/UE/4.3 etc.
Move your built engine to folder which you set as root when you installed Launcher.
E.g. if you set C:/UE as root when installed Launcher then move your 4.4 engine to C:/UE/4.4, your 4.3 engine to C:/UE/4.3 etc.