Thank you for your message.
Could you please clarify if you mean that you want Viewer to remember its position on your second monitor and automatically open the main Viewer window in the same region when run? If this is the case, unfortunately, there's no such feature available within Remote Utilities. Moreover, it seems like this feature is not supported by the Windows 10 itself. Perhaps, this can be done with some third-party software. Sorry for the inconvenience.
Please let us know if you have other questions.