where 2 is the number of the monitor you want it to use. Note: monitors are numbered from left to right and may not match the number that Windows show you!
On older versions of Windows you could simply place a desktop shortcut on that monitor, and RemoteSign will use the monitor it is launched from.
Update December 2022
It appears that something has changed in how Windows manages the extended desktop across multiple monitors. Without making any code changes, newly compiled versions seem to work fine, so if you are having a problem, pick up a new version.
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