I have DOPUS installed on three machines. I am retiring one of the machines and need to know how to transfer DOPUS to a new laptop. How do I do this?
You don't need to do anything special. Just uninstall Opus from the old machine and install it on the new machine the say way you did in the past.
See How to backup or locate your Opus configuration if you want to transfer your configuration from the old machine to the new one. (If you do wish to transfer your config, you need to back it up before uninstalling Opus from the old machine, as uninstalling erases the config.)