>>I don't want the 3rd monitor.

Last year another poster reported experience setting up 6 monitors at his desk(!)

If I have his identity correct he is taking a hopefully short break, so cannot report experience to date, but I believe he had the monitors set up as one huge deskspace across which he dragged and positioned various systems. I don't think this would work with 2 screens for Gotomeeting as you'd need to stretch both width and height which is not possible with only 2 monitors.

FWIW, you can have a 4K monitor as your main screen and one of your existing monitors as screen 2, or vice versa. Windows is quite good at scaling across both monitors- and apart from seeing a whole shared Gotomeeting screen, the other benefit is testing your apps in 4K where VFP apps often have issues you'd prefer to sort before customers report them.