How to change second monitor brightness from Windows 10 settings?

Question

Monitors

There is a laptop with Windows 10, changing the brightness using Windows changes the brightness of the laptop monitor.
An HP 24es is connected to it via HDMI and is not affected by the brightness settings in Windows.
Question: how to make changes in brightness in Windows reflected on both monitors, or at least on the second one?
PS Yes, there are buttons for settings on the monitor, but you don't want to poke them every time.

Answer 1

Try the proprietary HP My Display app https://support.hp.com/en-us/drivers/selfservice/h... install the driver. The application can control the brightness of the monitor.

Answer 2

Well, actually, "monitor brightness" is the brightness of the backlight lamps / LEDs behind the matrix. In the monitor.
Accordingly, the only option is to "command" the monitor via DDC.
In my opinion, the Samsungs had complete utilities that allowed you to steer the monitor from your computer.
But in fact it will turn out the same work - press the buttons separately, but on the mouse.
Although abstract and technically there are no obstacles to intercept brightness adjustment events on the laptop and send the appropriate commands to the DDC monitor