[Feature Request] Disable when using, but only the used screen

[supernumeraries]

Hello dear Dev team,

thanks for this brilliant program. Would it be possible to add an option or change the functionality of "Disable when using", so that only the used screen is affected?
Having more than one monitor, using a program in the dark can have quite the flashbang effect. It would be great if users could have better control over this.
If an automatic detection would prove difficult or too expensive for some reason, I personally wouldn't mind if I had to select the monitor, similar to the already available monitor selection option.

Thanks for the consideration!