The problem is having two or more PC’s and having to go back and forth between workstation.
To start out install it on each Windows machine you want to control through Input Director.
Arrange the monitors how you like on the Master system, where here the Master has two monitors.
Then press Add under Slave Systems to add the other machines.
In Global Preferences you could decide how each computer will behave.
This way you will not have to go back and reconfigure them after a reboot.
This utility is free, easy to use, and works like a charm on Windows systems.
If you’re running a mixed OS web connection environment you might want tocheck out Synergy.
Download Input Director for Windows